Shockli, Since 2008, professional on batteries more than 10 years. We are the professional batteries manufacturing with excellent quality control which earn us customers all over the world. Shockli AA Size 3.2V LiFePO4 Solar battery specifications Battery Type : LiFePO4 (Lithium Iron Phosphate) 3.2v solar batteryCapacity : 650 mAhVoltage : 3.2VSize : AA Size (longer 1/5 inch than 14430), CAN NOT replacement the 14430Discharge Cut-off voltage : 2.0VCharge Voltage : 3.6±0.05VCycle Life : 1500 Times Cycle LifeApplication : solar light Advantage Long Lasting Shockli AA Size 3.2v solar battery is higher capacity in market Long Cycle Life 1500 Times Cycle Life Wildly Compatible Outdoor Solar Lightshaver Check Dimension, Voltage Before Purchase NOT replacement for the 14430 3.2v LiFePO4 batteriesAA Size(diameter x length): 14 mm(0.55 inch) X 50 mm(1.97 inch)AA 3.2V LiFePO4 battery, NOT replacement for the AA NiMH / NiCd 1.2V battery and li-ion 3.7v battery Two different kinds of 3.2v solar battery (Check Dimension Before Purchase) AA 3.2V LiFePO4 Chemistry: LiFePo4 (Lithium Iron Phosphate) Capacity: 650mAh Voltage: 3.2V AA SIZE: Diameter x length is 14 mm(0.55 inch) X 50 mm(1.97 inch) Can be recharged: Yes 14430 3.2V LiFePO4 Chemistry: LiFePo4 (Lithium Iron Phosphate) Capacity: 450mAh Voltage: 3.2V SIZE: 14430 Can be recharged: Yes More SAFER common Question & Answer 1. Are these batteries already RE-charged fully?Answer: No, It only 80%- 90% charged, Please install in solar device that be charged fully by the sun.2. How long do the battery keep the solar light on?Answer: Normal keep solar lights on 5-10 hours( get a good amount of 6-8 hours sun shine for fully charge), The time will be shorter when the poor sun shine or IN Winter3.Can i replacement the battery for the AA-3.2v lifepo4 400mAh or 500mAh battery?Answer: Yes, this battery will work great in your device. The battery size (AA Size) & voltage (3.2V) match up4. The solar lights are bright when the new battery was installed, after a few days the new batteries are dim?Answer : It could be that the battery is bad, or the solar light can't charge the battery, We suggest replacing the battery with the solar lamp that work well, Check whether the battery can be charged properly. (4-Pack) AA 3.2V LiFePO4 (6-Pack) AA 3.2V LiFePO4 (8-Pack) AA 3.2V LiFePO4 (4-Pack) AA 3.2V LiFePO4 with charger Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.3 out of 5 stars 864 4.3 out of 5 stars 864 4.1 out of 5 stars 148 3.9 out of 5 stars 55 Price $11.99$11.99 — no data $17.99$17.99 $19.99$19.99 Unit Count 4-Pack 6-Pack 8-Pack 4-Pack battery with charger Battery Type AA 3.2V LiFePO4 AA 3.2V LiFePO4 AA 3.2V LiFePO4 AA 3.2V LiFePO4 RECHARGEABLE YES YES YES YES Application Solar light Solar light Solar light Solar light