In Business I always used UKL - GBP is the “new boy on the block”. Thanks Pete for the Alt-156 (by the way for others, you have to use the numeric keypad numbers, not the ones across the top of the keyboard, for this to work (at least on a German keyboard) £ .
Back to Karl’s decisions on batteries - I think, if he has decided to go for a 4S LIFEPO - I think 4Ah should be enough for his power usage on a summit - such as this one:
I can recharge my 5Ah LIPO batteries at 2 amps within 2 hours. Karl unless you want to quick charge the battery, you can probably go for a lower powered (and cheaper) balanced charger.
Ed.