third party chargers

Joined
Jan 26, 2022
Messages
1
hi,
This is my first post so I hope you'll go easy on me (not sure what kind of forum this is yet).
I spent a couple of hours researching this but came up empty so:

I am looking at a used 36V ebike battery pack for some projects (e.g. a hoverboard hack) but it has no charger.
The battery is this "California" "Advanced Electronics Energy Limited" "AEPCM100136V10AH000360" 36V:
https://ibb.co/r7c1qyV
https://ibb.co/qM5nYCM
https://ibb.co/60yzVwT

https://ibb.co/hYn1VDj
https://ibb.co/M1GvvVc

I found two chargers that seem to match in terms of voltage and the type of socket (I'm not sure if the socket is an exact match though):

"36V Charger 42V 2A electric bike lithium battery charger for 36V lithium battery pack with 3-Pin XLR Socket/connector"
~ $17 https://www.aliexpress.com/item/4000864496646.html

"XINMORE Charger 42V 5A Scooter Lithium Li-ion Battery Charger Bike AC-DC 36V 5A for Switch Bicycle Electric Tool XLB Plug"
~$30 https://www.aliexpress.com/item/32864407989.html

(I guess the used "California" battery pack I'm looking at is more likely XLR and not GX16-3 due to it not having a groove for the GX16 dimple)


1. Can anyone tell me if I will be able to charge that battery safely and without damaging it with both of those chargers listed above? (not sure which I'll get yet but I'd rather spend $17 than $30, although the faster 5A charge rate is attractive on the $30 one)

Does it matter which charger I get in terms of potentially damaging the battery pack? I watched an interesting video about charging lithium batteries and it mentioned that charging at too low a rate can massively reduce the number of charge cycles/lifetime for certain chemistries (https://youtu.be/pxP0Cu00sZs?t=1487) or if the charger has slightly too high upper cutoff voltage (https://www.youtube.com/watch?v=pxP0Cu00sZs&t=2151s), although maybe that's controlled by the battery pack internal BMS? I don't know.

2. Does anybody know what kind of socket that is on the battery pack output? Is it a standard or some impossible-to-find proprietary thing? Or what kind of hack/spade connector/etc. I could force into it to get power out (choosing a connector and cabling appropriately rated for the expected current)? Or maybe I should open up the pack and put in some other connector of my choice (if so, which one?))
 
justAddElectrons said:
2. Does anybody know what kind of socket that is on the battery pack output? Is it a standard or some impossible-to-find proprietary thing? Or what kind of hack/spade connector/etc. I could force into it to get power out (choosing a connector and cabling appropriately rated for the expected current)? Or maybe I should open up the pack and put in some other connector of my choice (if so, which one?))
The round one sure looks like a common XLR connector, commonly used on battery charging ports.

Shown and described near the bottom of this helpful link:
https://ebikes.ca/learn/connectors.html

The other one (the discharge port you are asking about?) apparently comes up 404 Not Found? So I'm not able to view it.
 
All kinds of 2A 10S 42V chargers on ebay and amazon, if you're not looking to wait six weeks for aliexpress, especially with the New Year celebration and 2 week shutdown coming up next Month in CHina.

The XLR connector can take higher amps, but most of my batteries are 5mm barrel connectors, so I use 2 A chargers.

If you're looking for a 5A charger with metal box and fan, get one with trimpots so you have some freedom to adjust. The low cost models have no trim pots, and sometimes are off. I don't mind if they read low, but I won't use them if they read high.
 
Just buy a cycle satiator charger from Ebikes.ca, you can program it to what you would like.
 
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