Someone contacted me via e-mail with with this question. Posting here for the benefit of future Google searchers, and in case anyone else wants to jump in with info/advice...
Quote:
My name is *** and I come from Slovakia. I am really
interested in EV conversions like your one and I decided to build something
simillar. I like the way you converted Geo Metro to an EV with just
little money.
The problem I have is about recharging batteries. As I could
see, you are using lead acid flooded batts. But I allways heard, that I
have to open all the caps before charging, like by car batteries, because by charging escapes hydrogen, which can cause an explosion. My first EV
Marek's 1981 Jawa Babetta 207 (well, it is just electric moped  )
uses lead acid flooded battery and before charging I allways open 6 caps
on single 12V battery. But I canīt imagine opening that plenty of caps on
every battery.
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