Four pack of Enekeep rechargeable batteries to suit the CC-3000 series RainWise data logger. Like the Sanyo eneloop batteries, these have all the benefits of disposable batteries, but are rechargeable - they feature ultra-low self-discharge technology so they can be used immediately after purchase. They retain 85% of initial capacity after 1 year of storage, are environmentally friendly and are ideal for the most demanding of modern digital devices. Supplied in a protective storage case. 4 x AA, 1.2V, 2000mAh batteries.