My biggest concern is charging to 90% and not 100% as I've got a huge hill at the start of my commute. I wish we had a bleed off power feature, so I didn't have to sit around the charger to keep it from 100% or have to ride for 20 minutes to burn enough power to be able to go down hill.
I'm wearing the Triple 8 kneepads and elbow pads and wear them under whatever outer layer I've got on. Haven't taken a dive yet with them, as they were both post fall purchases and I'm more careful now, but they're comfortable, and feel solid as a rock.
@cactvs they make that it's usually referred to as a power supply but in to dial in that specific of amp/volt/ configuration and monitoring would be in the hundreds to thousand dollar range. It also would not have the factory calculated and specific safety measures engineered into it as per your exact equipment. It would be cheaper and safer to just use the charger that came with it. Zip tie them together and call them one.