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  1. M

    Good 4S BMS

    Thanks for the comment, I'll try giving as much information as I can. First of all I'm using Panasonic NCR18650B which should be very good batteries, they were all previously tested and the capacity was around 3400-3500 mah. I then discharged all the batteries to around 3.7V, the batteries are...
  2. M

    Good 4S BMS

    Hello, I've build a 100AH lithium battery from 18650 batteries, I've used a BMS my friend gave and says it should be good, but it seems like it's not really working well. I have 2 cells which are at around 4.2V and going beyond that(I think the limit is 4.25V, I haven't tested that as I don't...
  3. M

    Looking for a charger for 4S configuration 18650 battery

    Yes that's what I was aware of as well, I'm currently discharging all my battery to be somewhere between 3.6V-3.7V before actually building up the battery pack so they're all at pretty much the same voltage. How long is long term? ^^ Or in other words, after how long I should re-check that the...
  4. M

    Looking for a charger for 4S configuration 18650 battery

    Bump :)
  5. M

    Looking for a charger for 4S configuration 18650 battery

    Thanks for the reply! I also think I'll go with the $36 charger. I'll also take your advice for the alarm, but isn't it extremely bad having the battery charged all the time? As far as I know, when the battery is in store it should be kept at around 3.6-3.7V or ~14.6V. Do I also need 2 different...
  6. M

    Looking for a charger for 4S configuration 18650 battery

    Hello, I have 120 NCR18650B batteries which I'll be using to build a 4S configuration battery. I'm looking for recommendations on a charger from aliexpress/ebay, I don't really need a fast charger so I don't really mind if it would take very long to charge. As far as I understand I simply need a...
  7. M

    BMS for 4S30P battery pack

    Thanks, but does it give anything else besides the ease of monitoting?
  8. M

    BMS for 4S30P battery pack

    Oh, I didn't understood it from your previous post. Thanks! :) If you think there is something else that's better I can buy that's also an option.
  9. M

    BMS for 4S30P battery pack

    I'm not really sure what it means ^^
  10. M

    BMS for 4S30P battery pack

    I'll be using this for running my astrophotography gear(astronomy imaging). The things I'll need to run are: Cooled camera(should peak at 3-5A), mount(should peak at 2-3A, but averages at 0.5A probably), another camera which should take 0.5A max, a laptop which should peak at 3.25A and I'm not...
  11. M

    BMS for 4S30P battery pack

    Will that really be enough? Generally I own the following BMS's: https://www.aliexpress.com/item/32961705432.html?spm=a2g0s.9042311.0.0.27424c4dP1O6H3 https://www.aliexpress.com/item/32837937191.html?spm=a2g0s.9042311.0.0.27424c4dP1O6H3...
  12. M

    BMS for 4S30P battery pack

    Hi, I'm looking for a BMS for a 4S30P battery pack. I'll be using Panasonic NCR18650B unprotected batteries. I might need to purchase that from ebay/aliexpress/amazon, recommendations would be much appreciated! The battery will be used in the field for running 12V 0.5A-10A(doubt I'll actually...
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