Hello,
I have this charger I use at home for 37.4v.
Is it possible to build a battery pack with 10 x 18650 rechargable batteries linked in series.
I mean just linking those 10 batteries in series is enough and will charge with 37v like the charger?
That works only if the batteries are matched to each other in capacity,and can be dangerous if they are not matched.
There is plenty of material on line about making up your own LiPo packs.
You have to be very careful with them as they can explode/burst in to flames in a very spectacular way if mistreated or charged incorrectly (lots of youtube videos of this), they require special charging circuits (see balance charging) which monitor the voltage of each cell as they charge and ensures they are not over charged etc., ideally it should also monitor the temperature. Also they require a circuit board which ensures they are not over discharged when in use (this can be built in to the 18650 or the device they are installed in).
Having said that I use them for all sorts of things and rescue them from old laptop batteries, but you have to treat them with some respect.
If you search eBay for "B6AC charger" I have one similar to this which I charge mine with.
I would guess that the "charger" in your picture is just the power supply for a charging circuit inside the device it was supplied with?
If you are connecting many in series you need something to check and control the balance between the cells and have a proper charger ( not just a voltage supply !)
10S/13S/30A/50A Lipo Battery BMS System Cells in series 10 Discharge Current 30-60A (bmsbattery.com)
It would be like charging your car battery with a 12.6 volts battery charger...
Thank you all for responses. The charger I use for an electric scooter, and I was thinking to build a powerbank to have in my backpack like an emergency gas canister for a car.
Can 10x18650 batteries linked in series and a 10S MBM work to charge like the charger?
10pcs 18650 in series in full charge have 42V.
the power supply is rated for 3.5amp, you would need to be sure the 18650 cells you have are ok at this discharge rate (I would think they would get pretty hot if they are?), the power supply seems oddly specific on its voltage at 37.4v which would imply it would not be ok to supply a different voltage to this?
an 18650 voltage will be around 4.2v when fully charged, dropping to around 3v when discharged, often 3.7v is quoted as being it's nominal voltage.
btw - i happened to watch this video recently where he adds the option to plug in a second battery which may be an easier option Upgrading the cheapest street-legal E-Scooter I could find on the Internet! - YouTube
Hello,
I want to build a battery pack using 2 x 18650 Panasonic NCR18650B and this BMS.
My question is: what nickel strip thickness do I need for this?
I have at home 0.1 x 4mm and 0.11 x 8mm
Is 0.1 x 4mm enough? Or should I use the other one?
It depends on how much current you plan on drawing from and or use charging the batteries. At this point I will take a SWAG and say the 0.1x4mm will be ok. I am assuming the length will be maybe 2.5cm or less. If you are going above 2A check with the nickel supplier as th the resistance of the metal to be safe.
Thanks, I am powering an arduino nano with it, and a servo motor and a led from arduino.
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It isn’t the same topic, the shouldn’t be merged because there are 2 different projects and they are different.
Whatever you choose , you need to add a fuse that will protect these strips and the battery pack
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