home skillet
New Member
- Joined
- Dec 30, 2021
- Messages
- 36
BTW.....one of us looks like a total moron and 1 of us doesn't. I'll take my chances!!!
Tell me specifically, what i am doing wrong? Tell me how I don't know how to EQ a battery? Tell me how to its wiser to use a "R/C hobby charger" (for remote control cars and planes that utilize a 1500 MILLI a/h battery) Tell me how this R/C charger will fare when it charges a battery 1000 times bigger than it is designed for. As a R/C charger its duty cycle is minutes and charging my forklift battery it will be hours and hours. Tell me it has a big enough heat sync to charge for hours on end?
do you make these 1 gauge cables yourself or do they come with the charger? Is the output voltage adjustable in .1 volt increments?
i have to find one that runs on 120vac and outputs 2.6vdc at or near 100 amps for a PB battery
I live off grid in Upstate NY. I have a 14400KW solar array, 4x Midnight solar charge controllers, 2x8048 Outback radians and a (1500 A/H, 6000 lbs,) 48 volt BBI "forklift" battery. and a 30KW Isuzu diesel generator
I was having issues with one cell always being 6 points lower (SG 1.22 vs 1.28) than the other 23. I could equalize the battery, but when I did, the other 23 cells would go up to SG 1.3 and hang there for hours waiting for the weak cell to catch up. The other 23 cells got very warm and I would shut down the equalization without truly equalizing. After the EQ was finished?? I'd have 23 cells at 1.29 and 1 cell at 1.26. I was looking for a way to charge the one weak cell at 2.5 to 2.6 Volts DC, without subjecting the other 23 to this voltage. 2.6 vdc applied to a single cell is "Equalize voltage".
Low and behold I found a company called Hindlepower out of Easton PA. They make a single cell battery charger that you can use while the battery is in service.....hooked up and powering your home. I was skeptical, but I bought one. It adjusted it to 2.6 volts / 10 amp output per instruction. Before I actually hooked it up to the weak cell....i thought....."at only 10 amps, this probably wont the moxie to bring the weak cell to 2.6 volts". Anyway, the weak cell was at SG 1.21 at this time and the other 23 were SG 1.25. I hooked it up to the weak cell and I was only getting 2.38 vdc going into the weak cell. I thought I had wasted 465 dollars. I left it charging the weak cell all day long. The test day was partially sunny, but far from clear, as far as solar charging goes. When the sun went down, I checked the SG's and I was shocked. The "weak" cell was now at 1.28 was the other 23 were at 1.27. IT WORKED. I can't honestly say it ever brought the weak cell to 2.6 volts........but I dont care. It did its job. It brought the weak cell inline with the others. That was one week ago and the weak "cell" still runs neck in neck with the other 23. I do think the weak cell is probably a weak cell by definition and will probably have to do this again every month or so (especially in the winter). I wont however, have to subject the other 23 to high temp and high voltage for hours in an attempt to bring the weak cell inline. Hopefully this can help someone out there dealing with a delinquent cell or two.
Single-Cell Charger · HindlePower; Model: BB0442-01. ...........Hindlepower will not sell to us lil guys directly. I bought it thru Dowd Battery in Buffalo NY and paid $465 for it.
I seem to experience the same problem with my 24volt 220ah tubular FLAs. Please how do I charge a cell separately in a battery?
you're good home skillet;my bad......i never said you made you own cables......but when i look online i see the R/C chargers and they say cables sold separately. I haven't seen any 1 gauge cables.....thats all. I have to make a lot of my own cables out of 4/0 welding cable. Nothing wrong with making your own wiring.
It totally depends on your access to the actual cell-level terminals. I googled 'tubular fla' real quick and i'm still not sure yet how hard that would be for you.I seem to experience the same problem with my 24volt 220ah tubular FLAs. Please how do I charge a cell separately in a battery?
This is exactly what all lithium battery BMS's do during 'balancing', although more specifically it discharges the highest cell into the lowest cell. But with lithium batteries cell level terminals are 'easy' in comparison to FLA, because unless you're looking at a 2.1V single cell 'battery' the cell level connections are buried inside a melted-shut 'water tank' and unless you're going to go in there and hook up 'laparoscopically' with tiny bendy robot arms through the cell vent cap, it's generally not easy to hook to the cell-level terminals.I never thought of charging 1 cell, with the power provided from the other 23,
This is exactly what all lithium battery BMS's do during 'balancing', although more specifically it discharges the highest cell into the lowest cell.
I am waiting for my Mean Well RSP-3000-12 power supply to be deliveredAbout buying a power supply, Do you know where to buy a power supply with a adjustable range of 1.8 to 2.6 volts that outputs say.........75 or 100 amps? If a 100 amp charger, i wouldn't have to charge for 12 hrs.
Whoops. There i go using the word 'all'.This is only party true with active balancing and varies by balancer. Most BMSs use passive balancing where resistors just burn off charge from the high cells as heat with a paltry 30-70mA.
I am waiting for my Mean Well RSP-3000-12 power supply to be delivered
It is supposed to supply 2.4 - 13.2 Volt at up to 200 Amp.
the cells I will be charging won't be grounded.
I already have the 48 volt version and was able to charge 12 volt batteries without a problem.
You're talking AC side and he's thinking DC side.Why would that matter?
here is picture of my batteries. ThanksIt totally depends on your access to the actual cell-level terminals. I googled 'tubular fla' real quick and i'm still not sure yet how hard that would be for you.
Can you post a pic of one of your batteries?
This is exactly what all lithium battery BMS's do during 'balancing', although more specifically it discharges the highest cell into the lowest cell. But with lithium batteries cell level terminals are 'easy' in comparison to FLA, because unless you're looking at a 2.1V single cell 'battery' the cell level connections are buried inside a melted-shut 'water tank' and unless you're going to go in there and hook up 'laparoscopically' with tiny bendy robot arms through the cell vent cap, it's generally not easy to hook to the cell-level terminals.
Unless im missing something...?