Anker PowerHouse 757 - DEAD - Can we make our own portable power station? Part 1
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- Can we make out our portable power station from the battery?
Would I be correct in assuming this is "48V" battery pack?
This was horrible to disassemble. Can't see anything obvious as to why it won't charge, or why the display is now stuck.
Im far from being and expert but i learn by listening to the experts and the experts say Its usually the BMS that fail first. Id send the parts back just the way it is to Anker and ask them to fix the problem .BTW saves them time for them to Disassemble
Buy a JK BMS and make one mother of a bike battery. I converted an 19KwH 16 cell lithium battery from an electric vehicle to a house bank using one, my system is 3Kw 48V, I used the JK 150amp BMS with 2amp active charging w/ Display. Been very happy with it thus far so got a second one for the next battery build.
Just save the bare lithium pack and rebox it with an off the shelf BMS. Then use stand alone inverters/chargers.
I would rewire the battery to 24V (or even 12V) to make it easier to source the ancillaries.
That might be a propitiatory BMS with all those extra comm ports. If so, the BMS might need to be swapped out with something more user friendly. I've run into that problem with rack mount lithiums. If you still have that Bluetti charger it should work for charging that pack
Still makes a good boat Anker 🤪
David the red fan is, in fact, a vortex compressor - not a centrifuge like the black one - it moves less air but at higher pressure - Vortex compressors are sometimes called Regen pumps - it's fascinating how they work air slips off each paddle as it spins into a side cavity and swirls around hiting the air slipping off the next - each paddle thus becomes a stage slightly increasing the pressure - often resulting in a final pressure of 2-4 psi - they are used a lot to oxygenate big fish pools
Make only additional charging module and use the rest like it is, is having the inverter on it and all the output suff allready , easyest way to go i think. Hop it will still work.
my first thought is check the relays with an external power supply and check continuity on the contacts. second thought is bad capacitor.
Did you try using the solar input and charge using a dc current?
About time 🤣
It's possible the built in BMS is relatively stand-alone. The data connection (I2C) probably just tells the power bank what's going on. If the test below works, we can reverse engineer the comms later.
If it were mine, I would try feeding 58.4V in, probably into the little XC15? connector. You could use a '48V' E-Bike charger as the power source. Monitor the cell voltages with a multimeter, first to see if they're charging and once they've charged, to see if they're balancing by seeing if the highest & lowest cell voltage converges over time. It may well just work.
If it charges & balances, you could just replace the charger inside the box with the eBike charger & leave everything else the same.
Alternatively, buy a 48V Sinewave inverter (same wattage as the original one as the current is probably limited by the BMS) and connect it up. That, then gives you the most useful function of the power-bank that you can put in another box (Ammo Tin?)
If it doesn't charge / balance - then it needs a Balancer. I've recently been testing an Active Balancer on 4 spare cells from my EV Project. www.ebay.co.uk/itm/195421030083 It works quite well & does a decent job of balancing. Unfortunately, it has too high a paracitic draw to leave connected permanently IMHO. However, on the board there's a little solder bridge marked 'run'. If you replace this with a switch, you can switch it off & reduce the draw. I have this connected to a relay so it only balances when the charger is powered up.
There are ones made by Daly, some of which can be controlled by an app, have better packaging & more features. I haven't used them - so you'll have to research a bit to see which offers what you want / need.
In either case, you can use the eBike charger. Pair it with a 48V inverter and a load of your favorite 12V connectors, put it in a nice box - and you're sorted.
Drop me a line if you'd like help - even 3D Printing a nice control panel if not technical.
Being 16 cells in series, the full charge voltage would be 58.4v, and one website considers a pack this size to be "48 volts", so probably best to start there for a charger to replace the now duff anker one to make use of the battery pack in something else... :)
Odds on one or more MOSFETs have failed on the BMS board. Easy enough to change.
I would say a new Bluetooth BMS so you can check capacity left on your phone. Another charger and a 48v pure sine inverter. Build it all into a peli type case
yup and stay at 48v, 12v you'll be practically limited to 1kw if you want them to live long due to current involved
You should have checked the output from the BMS board to see if there's voltage to the batteries
you need a new bms that you can set up the hvc lvc etc to your specs, dc to dc usb module and a inverter dc to mains and a desk top power supply that can take ac and dc to charge the battery make a box job done or use the old box. use a bluetooth bms use your phone as the screen . yes16s6p is exactly what you guessed it was
Take a part fun. YaBa DaBa Dooo
Maybe it was too hot or too cold to charge? I’m not familiar with that brand but also some have setting you can change usually with an app on your phone. Maybe sow how the max charge was set to 45% or less? No other ideas.
Ya I really really hope he checked ambient temperatures lol. I set my batteries to lock out charging at 4c some set to ten c to lock out recharge
18650 batteries? No problems man, most the stuff on that for equalising?
got the same problem, mine is 0 charge - bought it less than a year and with very minimal use. :(
Relay
that was my first guess.
Sad quality nowadays.