2.4V 4AH MiMH BAttery Stick, Replaces Mackwell B902 - 2QQMH4-0LFT4. 3.6V 4AH NiMH Triangle Battery C/W Flying Leads Replaces Mackwell E1301. Temperature: 55°C. This battery is equivalent to the Yuasa 2DH4-0L3.
eBay