This Nyte Vu LB900 Rechargeable Lithium Battery is a direct factory replacement battery for Nyte Vu's night vision products.
I purchased an additional battery to the one that comes with and have had no problems what so ever. 2 hours of constant use isn't bad it's small enough to put in your pocket, I could carry around a car battery and get 10 hours but it's not practical. I'm happy with it.
I have three of these and am extremely disappointed with their lifecycle. They do not hold a charge for long so be prepared to constantly charge them if you want one ready to go. Look for an alternative battery and save your money on this waste. I'd give it 0 stars if I could.