Hey, this is my first post! I’m a complete noob working on my first build and I’ve been doing some reading on the forums, but I thought I’d get explicit clarification on the charging systems. I have three 5000mAh 4S1P 14.8v 20C hardcase packs that I’ll be connecting in series for a 12S system, which should be a total of 44.4 volts (I think). But I’m still confused about amps and selecting the right specs for my charging.
Here are the additional details of my setup: Motor: TorqueBoards 6355 190kv Motor VESC: DIYElectricSkateboards VESC
If I were to use a BMS:
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I found this page with 12S BMSs for sale, and it seems as though the price increases as the amp capacity increases. For my setup, which amperage am I looking for?
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One of the draws of using a BMS is that I’d have a cleaner single port charging system. But once I have my female DC plug connected, what specs should I look for on a laptop charger?
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When using a BMS, I’ve read that you should use the BMS for charging only and not discharging. I’ve found several wiring diagrams for this setup, but I just wanted clarification that I need to configure it like this.
If I were to use a balance charger:
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When using a balance charger, I’ve read on here that it’s not necessarily recommended to charge all your batteries connected at once (not sure on this, I’ve read both ways). Also finding a 12S balance charger isn’t very easy. It’s not the end of the world if I have to charge them one by one since my enclosure is meant to be an easy open, but I just wanted clarification on whether or not charging in series is advisable.
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Same question for the laptop charger here, mostly just about picking the right one for the B6. I know the version two of the imax B6 plugs directly into the wall, so I might just go with that.
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What settings would I need to input on my balance charger to charge each pack individually? This is a basic question but like I said, I’m very new to these battery systems and I just don’t want to damage anything.
Any help is appreciated! If there’s something you think I’m forgetting or haven’t considered, feel free to mention it!