Hacking & Tuning E-bike battery charger, English
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- čas přidán 26. 03. 2020
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Version Español: • Hackeando y tuneando c...
I modified this "standard" lithium battery charger in order to make it more powerful and adjustable to different battery models.
- Chargers: www.aliexpress.com/store/1797797
- Voltmeter: s.click.aliexpress.com/e/_dZB...
- Voltmeter support part in Prusaprinters: www.prusaprinters.org/prints/...
- Voltemeter support part in Thingiverse:
www.thingiverse.com/thing:424...
- Voltmeter support part at Onshape: cad.onshape.com/documents/876... - Věda a technologie
Great video and some nice suggestions. Loved the practical safety step of covering the mains voltage section.
Where you drilled the holes in the casing , fitting an automotive style rubber grommets will add further protection and prevent shorting to case from trim pot while adjusting.
Better to use a plastic screwdriver but many don’t have those in tool kit.
True, Pat O mahony, I normally use a plastic screwdriver for that kind of pots, but I was not able to find them...
Next day I remembered where I put them, LOL
decent video mate!
Didn't even think to check to see if these chargers used pots to control volts and amps!
P.S you could add better heatsinks to the mosfets onboard so they cool better too, also you can get an ammeter that's the same style as your voltage lcd, it will help you tune your max amps if you're charging a weaker battery ;)
Maybe some switch styled pot relays would allow for setting multiple voltages to simple flicks of a switch like the variable versions of these chargers?
Those are very good ideas, thank you maybe next one I do all that. In this case I just made with what I had in hand...
Good work
Thank you
Amazing hacks. Thanks so much for sharing this. Gotta love how Chinese electronics are so hackable. Something manufactured in the West would be made with proprietary parts that self-destruct the moment you open the case and report the event to the mothership. How did the charger hold up over the last two years? I will probably hack mine to limit the charging voltage to 51.5V (80%), which should significantly lengthen the battery's lifespan.
I use it more less everyday, no problem so far, except that the fan is noisier now.
I try to avoid brands that are not repairable at least, ie. Bosch bike components.
Nice video
Thank you
It's nice the led voltage gauge every charger should show your charging volts ! Do your red and green led lights both stay on a full charge or just one green led ?
Thank you for your comment.
Well it is cool the voltage gauge, but it is better a simple led bar, as none remembers what is the full charge voltage. Not even me, and I have been working with batteries half of my life...
The red/green leds still work as they should, change to green when fully charged.
How did you know which pot was for what ?
Easy, just try one and see what happens, and then try next one. ;)
CAN ANYONE HELP WITH THIS??? if i want to increase the voltage of my charger from 60v 20ah to 72v20ah what is the actual voltage that i need to read on my multimeter? my charger is a common aluminum charger with a red/green light at the end under the fuse holder. Its rated at 240w 3amps... i think i know where the voltage pot is but do i also need to adjustt the amperage? and is there a high and low setting ? because there are 3 pots total all near one another!! and i Must make sure the charger DOES STOP when it reaches full charge! im adding an extra 12v20ah to my 5x12v20ah bank-60v20ah. I checked with emmo tech and he says i can safely add extra battery to get 72v20ah on my model scooter! im just trying to save buying another 90$ charger because i bought this one last summer its brand new and made by wouks from amazon! thanks to anyone kind enough to reply to my questions!!! its truly appreciated!!!!
Probably one of the pots is voltage, another one amperage and the last one threshold.
There will be some ranges that you will be able to play with in all of them.
Set the voltage at upper limit of your battery and set the amperage low for start. Leave the threshold as it is (provably around 10%)
Another point: Usually it is a VERY bad idea to mix batteries; different models, old with new, etc. The fires you see in the news are usually for this king of battery mishandling.
While I admire your craftsmanship, you could have made your tweaks with the case off just using your dmm if you were just wanting a 1 time voltage/current adjustment, right?
The idea is to have access to the pots without opening the case so they can be tweaked when ever need.