FDK(Sanyo) HR-4/3AU 4000 NIMH. Slightly longer than 1400 A Nicad, same diameter. Stump pulling power! 1.15 oz heavier than 1800 sub C with over double the capacity. Do you have a project requiring the ultimate capacity? Here it is! Weight 7.75 oz. Individual Cell Internal Impedance 20.0Ω
Suggested charge rate non-peak detecting 400mah or less, peak detecting 2000-4000mah. 4 amps is the max charge rate through hobby pins.