Recommend safe Battery for bike light DX

pgodwin555
pgodwin555 Posts: 66
edited December 2015 in MTB buying advice
Hi,
I recently bought a bike light from DX to give a go and although its been brilliant I wish to replace the battery with something safer to charge up. My friends one recently exploded and I don't wish to take the chance. I haven't yet charged it. My lamp is 8.4 voltage, 4 x 18650 (2 in parallel; 2 in series). Believe its 2.1 mm and 5.5. sockets the usual.

Apart from MTB batteries which is going to cost ~£60 for magic shine type batteries and charge plug, does anyone have any recommendations for safe and compatible batteries that can be used? Also any ideas of charge plug that should be used too? Pictures of lamp and connectors are below
Many Thanks
Paul

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