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Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh)

B&H # WADLI90 Mfr # B-3704
In Stock
Free Expedited Shipping on Orders over $49
You Pay: $19.95
Product Highlights
  • Replacement for Pentax D-Li90 Battery

The Watson D-Li90 Lithium-Ion Battery Pack works with the same cameras as the Pentax D-Li90. This replacement battery pack features a capacity of 1800mAh, 7.4V of output power and 13.32 watt-hours. Small and lightweight, lithium-ion batteries can be charged or discharged at any time without developing memory effect.

Compatible Cameras
    Pentax:
  • 645D
  • K-01
  • K-5
  • K-5 II
  • K-5 IIS
  • K-7
Chemistry Lithium-ion
Capacity 1800 mAh
Output Voltage 7.4 V
Watt-Hours 13.32 Wh
Dimensions HxWxD: 2.23 x 1.53 x 0.83" (5.7 x 3.9 x 2.1 cm)
Weight 2.9 oz (82.2 g)
Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh)
  • Limited 1-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    WatsonD-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh)
     
    4.7

    (based on 38 reviews)

    Ratings Distribution

    • 5 Stars

       

      (25)

    • 4 Stars

       

      (13)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Good value (27)
    • Fast charge (20)
    • Reliable (17)
    • Easy to install (15)
    • Long-lasting (15)

    Cons

      Best Uses

      • Back-up (20)
      • Primary battery (14)
      • Travel (9)
      • Professional cameras (5)
        • Reviewer Profile:
        • Photo enthusiast (18), Semi-pro photographer (15), Pro photographer (4)
        • Was this a gift?:
        • No (33)

      Reviewed by 38 customers

      Sort by

      Displaying reviews 1-20

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      Previous | Next »

       
      4.0

      it's a battery, so not much excitement.

      By Ptxusr

      from USA

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Quality Close To Original

      Cons

      • None so far

      Best Uses

      • Powering K-5ii

      Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

      Did a bit of research and came to the conclusion that third party batteris are pretty much a shot in the dark. Reviews for the same brand are all over the place.

      Howqever the battery for the Pentax K-5II takes a very long time to charge so haveing a backup is a must. This battery sells for about half the OEM equivelent. I've only had this one for about a week, but so far it seems to work as advertised.

      I haven't used it to exaustion, so I cannot really say how it compares to the OEM battery, for number of exposures, but it holds a charge, and powers the camera. In short it does what it's supposed to do so far.

      I won't know how well it stacks up over the long run for some time, but if it's extreemly good or extremly bad I'll update this revies.

      • Was this a gift?:
      • No

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      5.0

      Good capacity, inexpensive

      By Zodpa

      from New Jersey, USA

      About Me Pro Photographer

      Verified Buyer

      Pros

        Cons

          Best Uses

            Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

            Seems to hold a bunch of charges. Much cheaper than Pentax replacement.

            • Was this a gift?:
            • No

            Share this review

             
            5.0

            D-Li90 Lithium-Ion Battery Pack (7.4V, 1

            By "With the Wind"

            from Medford, Oregon

            About Me Pro Photographer

            Verified Buyer

            Pros

            • Compact
            • Durable
            • Easy to Use
            • Lightweight

            Cons

              Best Uses

              • Landscape/Scenery
              • Travel
              • Video
              • Weddings/Events
              • Wildlife Photos

              Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

              I am completely pleased with this battery for back-up to my recent purchase of a Pentax K-3 Camera. It works perfectly and I highly recommend this battery.

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              Recommended, specifically for the prize.

              By Dan M.

              from Boston, MA

              About Me Semi-pro Photographer

              Verified Buyer

              Pros

              • Price

              Cons

              • Fits Loose On Charger

              Best Uses

                Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                Use this for my grip. Discharges a bit faster but its not unreasonable. Would definitely buy again.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Sure beats paying Ricoh's List

                By Jerrysvoice

                from Whitesboro, NY

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Easy to Use
                • Great value

                Cons

                  Best Uses

                    Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                    Bought this as a backup for my Pentax K-5IIs. Charged it up and it works like a charm. Highly recommend it.

                    • Was this a gift?:
                    • No

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    4.0

                    Taking a chance on off brand battery ?

                    By droF

                    from Novi, Michigan

                    About Me Semi-pro Photographer

                    Verified Buyer

                    Pros

                    • COST

                    Cons

                    • Durability
                    • Usable Life

                    Best Uses

                    • Landscape/Scenery
                    • Sports/Action
                    • Travel

                    Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                    I'm trying this battery as opposed to the camera manufacturer's own battery due to the more than double cost of the manufacturer's. Will have to wait to see if I made a wise decision.

                    • Was this a gift?:
                    • No

                    Share this review

                    (3 of 3 customers found this review helpful)

                     
                    5.0

                    Works great in K3,

                    By Robotman

                    from York PA

                    Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                    I bought this as my backup battery for my new Pentax K3. It works fine. The Pentax charger is more of a trickle charger so it took a while to get fully charged but it seems to last as long as the factory battery.

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Great value

                    By Rod Cuellar

                    from Searcy, AR

                    About Me Semi-pro Photographer

                    Verified Buyer

                    Pros

                    • Durable
                    • Easy to Use

                    Cons

                      Best Uses

                        Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                        Charges up and holds the charge. Haven't had any issues with it. Considering the price, I think its a fantastic deal. Cannot distinguish any obvious difference from the more expensive Pentax brand batteries. Very satisfied.

                        Share this review

                         
                        5.0

                        Excellent Value for the Money

                        By Ari

                        from Freehold NJ

                        About Me Pro Photographer

                        Verified Buyer

                        Pros

                        • Charges Quickly
                        • Easy To Install
                        • Good Value
                        • Long-Lasting
                        • Reliable

                        Cons

                          Best Uses

                          • Back-Up
                          • Primary Battery
                          • Professional Cameras
                          • Travel

                          Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                          I buy Pearstone batteries exclusively for my Pentax bodies. They work as well as OEM batteries for a fraction of the price. They hold their charge and recharge quickly. Definitely worth the price!

                          • Was this a gift?:
                          • No

                          Share this review

                           
                          4.0

                          Great back-up battery

                          By ysphoto

                          from Ottawa, ON, Canada

                          About Me Semi-pro Photographer

                          See all my reviews

                          Verified Buyer

                          Pros

                          • Charges Quickly
                          • Easy To Install
                          • Good Value
                          • Lightweight

                          Cons

                            Best Uses

                            • Back-Up

                            Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                            I got this as a back-up battery to my Pentax one. While the rated mAh is lower but it does just as well.

                            • Was this a gift?:
                            • No

                            Share this review

                             
                            4.0

                            Just as good at the Pextax battery

                            By Blue

                            from Washington, DC

                            About Me Semi-pro Photographer

                            Verified Buyer

                            Pros

                            • Charges Quickly
                            • Easy To Install
                            • Good Value

                            Cons

                              Best Uses

                              • Back-Up
                              • Primary Battery

                              Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                              Haven't used it extensively yet, but it seems just as good at the Pentax battery.

                              • Was this a gift?:
                              • No

                              Share this review

                              (1 of 1 customers found this review helpful)

                               
                              5.0

                              As good as OEM!

                              By Frattofoto

                              from New Jersy

                              About Me Photo Enthusiast

                              Verified Buyer

                              Pros

                              • Good Value
                              • Long-Lasting

                              Cons

                                Best Uses

                                • Back-Up
                                • Primary Battery

                                Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                I needed one more battery so each of my cameras have a back up. Over 2 days and being outside in the cold shooting the battery did not let me down.
                                Over 1000 shots and the battery didn't show discharge. For 1/2 the price I would buy again!

                                • Was this a gift?:
                                • No

                                Share this review

                                 
                                4.0

                                a good battery

                                By NSX167

                                from San Jose

                                About Me Photo Enthusiast

                                Verified Buyer

                                Pros

                                • Charges Quickly
                                • Easy To Install
                                • Good Value
                                • Long-Lasting
                                • Reliable

                                Cons

                                  Best Uses

                                  • Primary Battery

                                  Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                  It's good for Pentax K5 and K01, it long lasting, and the price is right.

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                   
                                  4.0

                                  Not bad for a replacement/backup battey!

                                  By Tom

                                  from Halifax, NS

                                  About Me Semi-pro Photographer

                                  Verified Buyer

                                  Pros

                                  • Good Value

                                  Cons

                                  • Doesnt Last As Long As Oe

                                  Best Uses

                                  • Back-Up
                                  • Travel

                                  Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                  Makes a great replacement/backup battery, great price point compared to OE battery. Only downside is slightly shorter battery life between charges.

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                   
                                  5.0

                                  good value

                                  By e j

                                  from upsala, ontario, canada

                                  About Me Photo Enthusiast

                                  Verified Buyer

                                  Pros

                                  • Charges Quickly
                                  • Good Value
                                  • Long-Lasting
                                  • Reliable

                                  Cons

                                    Best Uses

                                    • Back-Up

                                    Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                    i'm using this as a spare/back-up for the original battery that came with my pentax k-5. works well, i never know which battery i have in the camera. the best thing about it was the price which is a fraction of what i would have to pay here in canada.

                                    • Was this a gift?:
                                    • No

                                    Share this review

                                     
                                    4.0

                                    Great value

                                    By Kodafixed

                                    from US

                                    About Me Photo Enthusiast

                                    Verified Buyer

                                    Pros

                                    • Charges Quickly
                                    • Easy To Install
                                    • Good Value

                                    Cons

                                      Best Uses

                                      • Professional Cameras

                                      Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                      Can't tell any difference from the OEM D-LI90 so far.

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                       
                                      4.0

                                      A good back-up

                                      By Stainer

                                      from New York, NY

                                      About Me Semi-pro Photographer

                                      Verified Buyer

                                      Pros

                                      • Easy To Install
                                      • Good Value
                                      • Long-Lasting

                                      Cons

                                        Best Uses

                                        • Back-Up

                                        Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                        Compared to other Pearstone batteries this one seems to rival the original well. I believe it's due to the size.

                                        • Was this a gift?:
                                        • No

                                        Share this review

                                         
                                        5.0

                                        Great affordable battery

                                        By Tenorchick

                                        from Lincoln, NE

                                        About Me Pro Photographer

                                        Verified Buyer

                                        Pros

                                        • Charges Quickly
                                        • Easy To Install
                                        • Good Value
                                        • Lightweight
                                        • Long-Lasting
                                        • Reliable

                                        Cons

                                          Best Uses

                                            Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                            Bought this battery to use in my grip and it is fantastic. Charges quickly. Lasts long. Great to use as primary or backup.

                                            • Was this a gift?:
                                            • No

                                            Share this review

                                             
                                            5.0

                                            As good as the original Pentax battery

                                            By Newbold12

                                            from Melbourne, Australia

                                            About Me Photo Enthusiast

                                            Verified Buyer

                                            Pros

                                            • Charges Quickly
                                            • Good Value
                                            • Long-Lasting
                                            • Reliable

                                            Cons

                                              Best Uses

                                              • Back-Up

                                              Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                              Having this as a spare battery was great - maintained its charge as well as the original Pentax lithium ion battery and let me continue with my photography.

                                              • Was this a gift?:
                                              • No

                                              Share this review

                                              (1 of 1 customers found this review helpful)

                                               
                                              5.0

                                              OK Battery

                                              By BobE

                                              from Port Washington NY

                                              About Me Photo Enthusiast

                                              Verified Buyer

                                              Pros

                                              • Charges Quickly
                                              • Easy To Install
                                              • Good Value
                                              • Reliable

                                              Cons

                                              • None

                                              Best Uses

                                              • Primary Battery

                                              Comments about Watson D-Li90 Lithium-Ion Battery Pack (7.4V, 1800mAh):

                                              Not the cheapest--but among the best. Although the Pentax branded batteries are excellent, this battery equals their performance at a far better price. I use it for portrait work, snap pictures at events, and landscapes. No problems, no downside.

                                              • Was this a gift?:
                                              • No

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