These batteries come pre-charged ready to go, no need to charge them for up to 14 hours as with standard NiMH batteries. Retain 85% of their charge after being stored for a year, standard NiMH batteries will retain just 20. This means your ReCyko batteries will always have life. ReCyko batteries take on average 4 times as many photos in a digital camera compared to Alkaline batteries. Environmentally friendly, can be charged up to 1000 times.