The Hope 2 Cell ES Battery is a twin cell 2600mAh rechargable Li-Lon battery that includes a Energy Status (ES) with an integrated power level display.
2 Cell ES Battery is compatible with the R8, R4+ and R2 lights.
Customer Reviews of Hope 2 Cell ES Battery
I bought this as a spare to go with a 3 year old Hope R4. The head torch has been absolutely superb but I found charging the old style batteries tricky (connection loose).These are a real improvement.My original charge cable fits snugly and the battery charge indicator is a very useful addition.I can't rate the head torch / battery highly enough (and the team at Hope were very helpful sorting out previous charging issue with old battery).