dilkes
100 W
I have an e-bike and a small electric scooter, and have been using “48V” LiFePO4 (16s) packs for both, bulk charging. I decided I wanted to have a small “emergency” pack for my scooter, and thought I’d try LiPo for this. I ordered 4 of the Turnigy 5000mAh 4S1P 14.8v 20C hardcase packs and 2 Battery Medics. My intention was to put these in series to build the small lightweight pack, bulk charge with one of my LiFePO4 Chargers (goes to 59.8V), and balance periodically with the Medics. So far, all I've done is hook these up in series, bulk charged them once to a total of 59.8V (about 3.74/cell), discharged once with a load off the bike and recharged. My wattmeter broke and I am waiting for a new one so couldn't measure the watts/Ah used and I probably won’t actually try them much more till the spring as winter seems to have arrived a bit early up here in Toronto.
Anyways, my questions:
Anyways, my questions:
- I probably screwed up by planning this as a 16s LiPo as I didn't think much about the higher full charge voltage delivered by LiPo over LiFePO4. I wanted to use my existing charger(s) (59.8V) and I’m not sure my bike’s controller/motor can handle much more voltage than that.
- If I carried on with this config and charge setup, charging to the 3.74/cell and discharging to (say 3.0V/cell?)
- Would I get much of the 5Ah capacity?
- Any idea how much?
- Is 3.0V/cell too low?
- I am thinking maybe I should get a 2s LiPo and use that with 3 of the 4s packs to make a 14s1p