3A-55M ni-mh size : aaa specification type : rechargeable nickel metal hydride battery dimension d.......................................................... 10.0 0.5mmd........................................................... 5.0 0.2mm h.......................................................... 43.0 mm nominal v oltage ................................................. 1.2v weight ............................................................... ~12g internal resistance at 1000hz..................................................... ~30m capacity rated capacity...............................................550mah1) at 0.2c discharge...100%~1 10% of rated capacity.2) at 0.5c discharge........95~100% of rated capacity. 3) at 1c discharge.............90~95% of rated capacity. 1) slow charge 55ma x 15hrs. (0-45 c) t o avoid overcharge, a timer is used to terminate the charging after 150% capacity input. 2) normal charge 250ma x 3hrs. (1 0-45 c) t o avoid overcharge, a timer is used to terminate the charging after 150% capacity input. in addition, a temperature cut off (tco) device, i.e. thermostat, with cut off temperature at 55 c must be used for safety purpose. 3) quick charge 550ma x 1.2hrs. (10-45 c) with char ging current over 0.5c a, a joint use of dt or - v cut off is required. for dt contr ol, a maximum allowable temperature rise is 1 c/min. or if - v control is used, the maximum allowable voltage decrease is 10 mv/cell. tco device with cut off temperature at 60 c should be used at the same time. storage: 1) storage t emperature........................-10 c to 45 c 0.0 0.5 remark: weight and internal impedence ar e for reference only . 0.2c / 0.5c / 1c rate charging curves 0.2c rate discharging curve 0.5c / 1c rate discharging curves v o l t s 0 0 . 2 0 . 4 0 . 6 0 . 8 1 1 . 2 1 . 4 1 . 6 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 c a p a c i t y % v o l t s 0 0 . 2 0 . 4 0 . 6 0 . 8 1 1 . 2 1 . 4 1 . 6 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 c a p a c i t y % v o l t s 0 0 . 2 0 . 4 0 . 6 0 . 8 1 1 . 2 1 . 4 1 . 6 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 c a p a c i t y % 1c 1c 0.2c 0.2c 0.5c 0.5c (with jacket) d d h
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