I would think either of the batteries would be fine. I would go for the cheaper one for that reason.

But definately sounds like your battery has had it though.

Thankfully mines still going strong as yet! (where's some wood)

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Mods so far:- Kev Mod/Snorkel Removed/Airbox Drilled/CO2 Upped/Cush Drive Mod/M.T.C. Exhaust/Avon Distanzias:avon: Fitted/NGK Iridium Spark Plug/H4 Bulb Upgrade/White Wheel Trim/Scotoiler/Hand Guards.