?Pre-Charge?For transportation safety purposes, these batteries are only precharged with 30%-50% power, so charge them before use for longer working. In addition, recharging the battery every 3 months can make its lifespan longer. ?Powerful Compatibility?Designed for solar lamps and lanterns, whether you own solar lawn lamps, solar string lights, solar bollard lights and a series of solar lamps and lanterns this battery will be a good choice. ?Easy charging?Supports two charging methods: 1. solar lamp charging, 2. charger charging, which makes you more convenient when you use it, and also has 900 charging cycles, which can save you more money on buying disposable batteries. ?Long-Lasting?With good durability and long-lasting performance, it provides a long-lasting power supply for solar lamps and lanterns, so that you can have a cozy and beautiful outdoor environment. ?Reliable Performance?12 X Ni-MH AA 900mAh 1.2v Rechargeable Battery,Ideal for garden solar lights.