Keenstone C Size Rechargeable Battery is Non-toxic, safe and friendly to the environment. Unique and sturdy structure design make it super safe to use, anti-corrosion, anti-explosion, anti-liquid leak and anti-cold/hot. Up to 10 years shelf life can be stored for a long time.
Battery Care Tips (for longer battery life): Don't store batteries unused for long periods of time with less than 20% of charge. Cycle batteries at least once every 2-6 months to keep them active. Store batteries in a cool dry location away from direct sunlight or high temperatures. Avoid moisture or condensation. Optimal temps for storing batteries is between 50°F - 86°F (not advised to freeze batteries in the fridge). Charge batteries to 40% or more before leaving them unused or for long term storage (3 months+). Once a battery charger indicates batteries are fully charged, remove the batteries from the charger and unplug from the wall.
