you can charge a battery pack this way. but some of the cells will get more charging cycles, because the balancing will start, stop... start... those cells will have a shorter lifespan.

@@Sorin_DIY ah i see... thank you for the explanation. 😃

thanks!

👍👍👍

Hi. You still need a BMS board, because the balancer module doesn't have battery protections: overcharge protection, overcharge release voltage, over-discharge, short circuit protection.

passive balancers are ok if you use them with new lithium cells. if you have old cells or a bigger battery pack, active balancers are better. active balancers waste less energy than passive balancers, so they are also better for battery packs that are charged from solar panels.

all BMS boards (with or without balancers) stop the charging process when the first cell reaches the overcharge protection value. this voltage value depends on all BMS boards. the charging cannot be stopped for just one cell.

it has a higher balance current - max 1.3A.

@@Sorin_DIY Thanks !!

Hi. you can change the resistor with a lower value for a higher discharge current, but it depends on the maximum current than the mosfet can work with, to trigger the cell balance. usually they work with 60-100mA, but there are some balance board with max 300mA. there is another problem, with a high balance current, the cells voltage may not reach the overcharge (cut-off) voltage, so the cells will continuously charge and get balanced. the cell voltage must reach the overcharge voltage to complete the charging process and cut the charging voltage, otherwise if the cells are continuously charged, they will get damaged in time. I suggest you watch my XH-M604 review video for more info.

eu le-am cumparat de la magazine locale - Quintrix si Adelaida.

It's recommended to use a BMS with passive balancing. An active balancer is optional depending on the type of project and battery.

yes. it will help.

Salut. modulul de balansare activa nu ofera protectii pentru celule. Ai nevoie si de un BMS sa protejeze celulele la supraincarcare si supradescarcare.

no. I made a separate video about that.

ok, I will add the schematic soon.

Hi, the active balancer is connected directly to the battery pack and will always balance the cells.

Yes, but it's more complicated. lowering the charging current is not enough, because you lower only the maximum charging current (when the charging process is in the constant current phase). you need the battery to draw less current in the final moments of the constant voltage phase. to make this possible, you need a small voltage difference between the charging voltage and the battery voltage, until one of the cells reaches the over charge protection voltage of the BMS and the charging process is stopped. for example for a 3S bms with overcharge protection voltage of 4.25V per cell (12.75V total) you need a charging voltage of 12.8V ~ 12.9V. this small voltage difference between the charging voltage and the battery voltage will charge the battery with a small current in the final phase and will slowly reach the cut-off voltage of 4.25V of one of the cells. you need to test the final charging current to make sure it is slightly above the balance current (so this also depends on the balance current of the BMS), otherwise the cell voltage will not reach the over charge voltage to complete the charging process. for more info you can watch this video: kzfaq.info/get/bejne/Z9Gkm5ea1sesgGg.html

1A should be enough to balance the cells. If this is not enough, then there is a big problem with the battery.

Hi. with new cells this will not be a problem. they will get unbalanced slowly in time and the active balancer will help to use almost the entire capacity of every cell. the battery pack will take longer to discharge, so it will be charged less often. it also depends on what you use the battery for. in a UPS the cells are charged very rarely, but when you need them, it's better to last longer, even if the cells get a few cycles in that time. but if you use the battery daily in a flashlight or a portable bluetooth speaker, the cells will get a lot of cycles. this may cause some damage in time, especially with old cells. then again, you do need the entire capacity. but if you use the cells between 20-80%, the damage will be minimum.

no. you still need a bms protection board.

yes. you should buy the battery as new as possible. if the cell is not stored at the ideal voltage of 3.8V, it will lose some capacity in time.

passive balancers are cheaper and are ok for new lithium cells. if you use old cells or bigger battery packs, an active balancer is better.

hi. I added the parts links in the video description.

I added the components list in the video description. the one I use in the video works in a voltage range of 2.0V-4.5V. so it's good for li-ion, lipo and lifepo4.

@@Sorin_DIY ah thank you

at first it's ok, but after a few cycles the cells will get unbalanced. if you use an active balancer is ok.

@@Sorin_DIY I agree with you

yes, if you connect the cells in parallel.

There is a problem with your BMS board with passive balance. you need to test the battery with a different BMS with balance.

@@Sorin_DIY Yes I suspect as much, I still use it because its overcharge, undercharge, and overcurrent protections all work (even per cell, nothing goes above 4.3 or below 2.3 without tripping). However, its wide range is almost certainly not great for the cells long term so I have carefully selected my devices to stop draining early. However, GreatScott did a video on these BMS boards and quite liked them for small packs as the DIY BMS consumed too much power to be used on smaller packs (smaller than a home sized pack). So I though it was safe to use one... generally maybe it was. Perhaps maybe mine has a faulty passive balancer that is always partially on but then I would expect to feel some heat. For now it's fine, I have an active balancer that is doing just lovely keeping things in check, and until the semester is over I'll just leave it as it's good enough and the self discharge of the whole system is low enough for short uses... however, I will be probing deeper into why it fails and getting a BMS that is rated to let through more current (the small current mine allows is way too small for a 3s16p pack of ~30Ah).

what is the link of your BMS?

hi. first you should test the lithium cells, because the voltage difference is very big. you need to test their capacity. if there is a big difference in capacity between the cells, you should not use them in that configuration anymore. if the capacity is ok, the 3S BMS will work.

Okay, I will try that. Thank you.

@Sorin - DIY Electrical Nerd I have measures the capacity of the batteries and they are close to each other. I have connected a variable load while it was charging so it was charging only with 200 mA. I have kept an eye on it just in case. Now the batteries are again balanced. Thank you for your advices.

lead acid batteries have a lot of current, it depends where you want to use it.

s.click.aliexpress.com/e/_DBDvs4D

yes

@@Sorin_DIY thanks!

I added the components list in the video description.

@@Sorin_DIY thank you sir, i hope next time you will have a give away for your subscribers. 🙏🙏🙏

black is better

I don't think it's good for the lithium cell, it won't charge properly.

6S battery pack and 6S active balancer the use 10 tp4056

When there is energy transfer between 2 cells, the corresponding LED lights up.

I tried one with xl6009 dc-dc booster but not positive outcome

hi. xl6009 is not powerful enough. you need a powerbank with the same specifications (or better) than the camera charger. the battery I found for your camera has 7.4V and 1.6Ah. so it has 2 cells in series. the charger probably has 8.4 - 8.6V. you need a powerbank similar to my fast charging powerbank, with multiple cells connected in series for a higher voltage, then a powerful step down converter like xl4015 with a CC/CV output. and set the voltage and current to the charger specs.

Thanks alot, I will try and update you with the outcome.

@@Sorin_DIY hi Sorin, after some more work and as you mentioned in your message, I gave ot a try with my lm 2596 module with 3 18650 cells in series as input and adjusted the output to 8.3 volts and on the multimeter readings the Amps were 3Amps+, and when I connected the dummy battery and inserted in the camera canon 500d , it started normally, Thanks for your replies, you are the best

@@Sorin_DIY How can I share some images or videos of my work with you?

black is better.

@@Sorin_DIY WHY YOU THINK THAT IF I MAY ASK..THANK YOU FOR YOUR REPLY BRO...LOVE YOUR VIDEOS

s.click.aliexpress.com/e/_DBDvs4D

@@Sorin_DIY Thanks for getting back, my friend, love your videos keep it up👍

Aris and Cici - the annoying cat.

lol@@Sorin_DIY

Hi. the battery tester link works: s.click.aliexpress.com/e/_ALYQ6g

@@Sorin_DIY so then it’s a problem with the destination. No shipment to Germany :(

You are right, try this one: s.click.aliexpress.com/e/_Dcvdu3v

@@Sorin_DIY you are great! Thanks. Just bought it :)