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  1. P

    Manual Stage charge for 12v SLA with a variac & car charger?

    Lets say I have 4 12v, 7ah SLAs that I want to charge in parallel. I don't have a decent smart charger yet. Can I do a 3 stage charge MANUALLY by using a variac and a car charger? I use two multimeters -- one to monitor volts, one to monitor current draw (its rated for 10 amps and run in...
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    Batteries: some hot, some not. What gives?

    Alright, dumb question, maybe. Hope this is the right forum. This morning I ran a nominal 54 volts -- measured 59.4 at the start of the ride. At the end of the ride -- immediately post ride -- I measured 51v. Pulled the pack apart and found some batts with significantly (2v) lower voltages...
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    Intro: newbie with homebuilt 700c/brushed motor ebike

    Hi all. First Post -- Been lurking around awhile -- thanks for a great resource! I'm running a pretty tame setup compared to a lot of you. A front drive, brushed crystalyte ("409" wind?) on an old Peugeot 10speed frame. 700c wheels, Low RR 35c tires at about 90psi, single speed freewheel...
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