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Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh)
Small and lightweight, Sony's Lithium-ion batteries can be charged or discharged at anytime without developing memory effect. This means they never lose their ability to hold a full charge. They also display remaining battery time on the LCD as well as in the viewfinder by continuously communicating with the camcorder. InfoLithium battery packs have a built-in micro processor that accurately calculates remaining battery life in minutes.
- Quick Charge Rechargeable Lithium-Ion Battery Pack reduces charge time by approx. 70% compared to other Sony batteries.
- NP-QM91D: 7.2v, 29.8WH (4140mAh).
- Built-in Microprocessor accurately calculates remaining battery life in minutes.
- LithiumIon Composition eliminates memory effect.
| Dimensions (WxHxD) | 38.2 x 59.5 x 55.6mm |
| Weight | 225 grams |
| Maximum Output Voltage | DC 8.4V |
| Output Voltage | 7.2V |
| Operating Temperature | 0 degrees C to 40 degrees |
REVIEW SNAPSHOT®
by PowerReviews(based on 21 reviews)
Ratings Distribution
100%
of respondents would recommend this to a friend.
Pros
- Long lasting (15)
- Fast charge (8)
- Lightweight (7)
- Reliable (3)
Cons
Best Uses
- Professional (9)
- Weddings (8)
- Home movies (7)
- Birthdays (5)
- Parties (5)
- Reviewer Profile:
- Tech savvy (9), Aspiring film maker (6), Film professional (5)
- Was this a gift?:
- No (4)
Most Liked Positive Review
Incredible life, but too big for HVR-A1U
I would recommend that any Sony camera owner gets one of these since the battery life is just incredible. You can sometimes get a whole day of shooting out of just one charge! And ...Read complete review
I would recommend that any Sony camera owner gets one of these since the battery life is just incredible. You can sometimes get a whole day of shooting out of just one charge! And the LED's on the back are just awesome. I have two of these, and quickly tapping the buttons to see which has more charge is an invaluable time-saving convenience.
I do have one large complaint, however. Using this battery with the Sony HVR-A1U is a pain, because it makes access to the viewfinder very difficult. If you want to press your eye up against the viewfinder (which of course you do ... that's the whole point), the battery will be jamming into your cheek. There isn't any easy way to get around the problem.
While I'm glad to have these batteries as backups, I am going to purchase the next size down so that I can shoot without this annoyance.
VS
Most Liked Negative Review
The Jury is still out on this one
I bought the Sony HVL20DMA Video light and this was the battery that went with it. I like that I can push it at any time and know how much battery life I have left...Read complete review
I bought the Sony HVL20DMA Video light and this was the battery that went with it. I like that I can push it at any time and know how much battery life I have left. I chose this particular light over a different model of what seems to be the same light because the charger for this battery was cheaper and overall saved me like [$]However, I am a bit nervous because this battery seemed to die relatively quickly (~3-4 hours). Maybe the other version has longer battery life.
REVIEWS
Reviewed by 21 customers
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Displaying reviews 1-20
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Pros
- Fast Recharge
Cons
Best Uses
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
This is to back up the smaller battery that came on our HVR-A1U. I have used it once so far and it performed as expected. The readout feature should be handy.
- Was this a gift?:
- No
Pros
- Long Lasting
Cons
Best Uses
- Professional
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I use this on a Sony A1U, it hangs out an awful lot but it 'thinks' that it can go for 6 hours on a charge. I haven't used it for that long but I'm sure it can handle 3-4. In general I've had mixed results with InfoLithium batteries from Sony. Some have died and don't seem to hold a charge, but most are pretty good. The only thing I don't like is how expensive these batteries tend to be, but I would rather buy name brand than some no-name to save a few bucks.
- Was this a gift?:
- No
Pros
- Battery notification
- Lightweight
Cons
- Power delay
Best Uses
- Any indoor special event
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I use this battery to power my HVL-20DMA Dual On Camera Video Light. I upgraded from a previous light and battery set. For some reason there is a 3 second delay from when I hit the on button until the light actually turns on. Not sure if this is due to the battery or the light. However, I do like the LED indicator. No more guessing how much battery life is left.
- Was this a gift?:
- No
Pros
- Fast Recharge
- Lightweight
- Long Lasting
Cons
Best Uses
- Birthdays
- Home Movies
- Parties
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I film weddings and use this battery with Sony HVL-20DMA Light for the late nights.Can shoot more than 2 hours with 10W and 1 hour with 20W.This is my second battery and the first one wich is 3 years old,stil runs like new.Icredible
Pros
- Long Lasting
- Power meter
Cons
Best Uses
- Home Movies
- Professional
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Though heavier than the original battery this one has invaluable led lights that tell you how much juice is left. Sony should put this on all their batteries.
- Was this a gift?:
- No
Pros
- Long Lasting
Cons
Best Uses
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Reliable and durable battery. It is the second I buy
Pros
- Lightweight
- Long Lasting
Cons
Best Uses
- Professional
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
When you are out on a shoot, the last thing you need is for your battery to run out. This battery is excellent that allows me to shoot more than one project before having to recharge.
Pros
- Fast Recharge
- Lightweight
- Long Lasting
- Reliable in cold temp
Cons
Best Uses
- Camping - Hiking
- Professional
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I had a few old batteries and realized I was playing musical chairs with them. I had a job coming up that was outdoors away from power, so I decided I needed a new battery. I checked the specs and the reviews before I bought this battery and it has out performed even the most complimentary review. It was around 38 degrees the entire 2-day shoot. I used only this new battery and didn't even have to pull out my old-schools. I was extremely impressed with the longevity of the charge.
Pros
- Long Lasting
Cons
- heavy
Best Uses
- Birthdays
- Home Movies
- Parties
- Professional
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Using it on a PDX-10. Works great.
Pros
- Long Lasting
Cons
Best Uses
- Home Movies
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Not having to worry about charging battery on extended filming. Definitly recommended to those that love to film your children at play or any special occassion.
Pros
- Fast Recharge
- Lightweight
- Long Lasting
Cons
Best Uses
- Birthdays
- Parties
- Professional
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I bought the np-qm91d batteries so that I could video longer without changing batteries. the battery that comes with the hvr-a1u has a very short life. I also bought the sony charger for the info lithium series and it will tell how much time is left to get a full charge or complete charge. I am very happy with my purchase and buying both products from bh photo saved me a lot of money.
Pros
- Lightweight
Cons
- Poor Fit
- Short Life
Best Uses
- Professional
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I bought the Sony HVL20DMA Video light and this was the battery that went with it. I like that I can push it at any time and know how much battery life I have left. I chose this particular light over a different model of what seems to be the same light because the charger for this battery was cheaper and overall saved me like [$]However, I am a bit nervous because this battery seemed to die relatively quickly (~3-4 hours). Maybe the other version has longer battery life.
Pros
- Charges Quickly
- Long-Lasting
- Reliable
Cons
Best Uses
- Professional Cameras
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Used to power my Sony A1Us as an alternative to the stock battery provided in the original packaging. Extends run time adequately to safely fill an 85 minute tape with LCD open, using remote zoom control, and sending component out. Need more time with the unit to assess its lifetime.
Pros
- Easy To Use
- Good Interface With Camcorder
- Quality Construction
Cons
Best Uses
- Home Movies
- Shooting Indoors
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Used this with my Sony HVR A1U camcorder and had enough power for the full 4 hours +.
Also used it with Sony's HVL-20DM light for 1 hour. Re-charge time is acceptable.
Pros
- Easy To Use
- Improves Performance
- Quality Construction
Cons
- Heavy
Best Uses
- Upgrade
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
having this extra life battery makes a huge difference when you need your video camera to work and can't always get to a power source. I used this battery on a camping trip, and it our lasted more than a couple tapes worth of shooting. Highly recommended.
Pros
- Fast Recharge
- Lightweight
- Long Lasting
Cons
Best Uses
- Birthdays
- Home Movies
- Parties
- Professional
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Great Product
Pros
- Long Lasting
Cons
Best Uses
- Birthdays
- Can use for any occasion
- Home Movies
- Parties
- Professional
- Weddings
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
We have a Sony-A1U, the batteries were to be desired. Not only one, but two NP-QM91D, are more than necessary to not only get the job done, but to alleviate much needed worries. The push-button charge level works great, and they're thick and sturdy. From one professional to another, trust me, you won't be disappointed.
Pros
- Long Lasting
Cons
- Poor Fit
Best Uses
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
I would recommend that any Sony camera owner gets one of these since the battery life is just incredible. You can sometimes get a whole day of shooting out of just one charge! And the LED's on the back are just awesome. I have two of these, and quickly tapping the buttons to see which has more charge is an invaluable time-saving convenience.
I do have one large complaint, however. Using this battery with the Sony HVR-A1U is a pain, because it makes access to the viewfinder very difficult. If you want to press your eye up against the viewfinder (which of course you do ... that's the whole point), the battery will be jamming into your cheek. There isn't any easy way to get around the problem.
While I'm glad to have these batteries as backups, I am going to purchase the next size down so that I can shoot without this annoyance.
Pros
- Fast Recharge
- Long Lasting
Cons
- Bulky
- Large
Best Uses
- Any long duration event
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
Larger battery extends amount of time to video record. Battery is large/bulky and makes it more difficult to access the switches around it.
- How long have you owned it:
- A month or less
Pros
- Long Lasting
- Powerful
- Reliable Performance
Cons
Best Uses
- Travel
Comments about Sony NP-QM91D M Series Info-Lithium Battery Pack (7.2v, 4140mAh):
The battery lasts a good, long time.
- Primary use:
- Business
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