same old battery issues, steep learning curve....

[berlingoian]

With reference to my previous post, looks like brake servo is Least of my worries.
for a novice, and one who finds electrickery a mysterious and invisible force at the best of times, I'm still trying to get my head around where I'm heading next.
Brilliant advice and information from grumpy et al. I'm resigned to whipping out middle battery pack but dont understand why such a previously well looked after and long range (50mile) vehicle would so suddenly fail so spectacularly.
Ive just limped home and re tested before batteries recover.
Average readings are around 6.5 except middle pack at 6.2, which doesn't look that bad to the innocent that I am.

So, accepting the worse, who has spare cells and how much?
Is it worth doing a balance charge?
:'(