even after changing the name to xxxxx.PS8 it doesn't show up in the open file to preset 1 window…
that doesn't work for me…
please send me the file without the .zip at the end …
[/quote]jehan wrote:I have finally installed the Anderson connector on the wheelchair in a position that I can access to plug-in.
I need a clarification on the Anderson connector wiring to the 4 batteries on the chair??
Woody had suggested to wire either left or right bank of batteries and the other bank will be connected through the internal wiringSimply wire your 24v charging Anderson across one pair of batteries ...the other pair will be connected to it by the chairs wiring
however, my local electrician suggested to wire just positive and negative of 2 batteries (marked in below image)…because it was easier and didn't have to pull the whole thing out
have charged it overnight and everything seems to be working fine with the float voltage completing at 27.2.
please advise if this wiring is all right for Charging and balancing all 4 batteries?
thank you
I’m on the 3rd set of 4 x 12 V 18 AH batteries… And on each of the sets, 2 batteries are stay good while 2 batteries fail within 3 to 6 months.
On the 2nd set, after 3 months, 2 batteries hold 6000 AH charge each and 2 batteries charge only 1000 AH and 3000 AH (discharging to 2 V per cell)
It’s one battery from the left bank and another battery from the right bank that fail
It’s one battery from the left bank and another battery from the right bank that fail
I usually cannot go up a ramp when the batteries have discharged to 25.7 V … I can only go on flat ground and at that point.
This is because of batteries that are incorrect, too small, damaged, too high impedance, and so not working even when over 90% full!!!
So, from what you and Woody suggest
1.start with a fresh set of 4 batteries
2. Parallel charge for 2 days (at what voltage? 13.8V , trickle charge ?)…. To balance the batteries
Some Questions:
A.what voltage should I charge these Amaron batteries at?… I’m currently charging at 2.4 V/cell (28.8 V)… Do I need to bring it down to 2.23V/cell (27.6 V)? According to datasheet float is 13.4 to 13.8 and boost charge is 14.1 to 14.4
B. would it help if I set up a balance charge with the PL8 on a nightly basis 10 to 12 hours?…
C. what am I trying to see when I run against the wall test?
It doesent matter. Those batteries are not suitable. But if you must fit them, then do it at 13.5V for 48 hours. You should not trickle charge lead batteries. You should float charge them at a lower CV float voltage to ensure all are equal and full.
Doesent matter what you choose. They will not work, voltage will collapse under load. But charge at 14.4V until current falls to 1000thC or 8 hours, which ever occurs first at 20C. Lower to 14.2V if its 30C
Its a simple LOAD test. If the batteries were any good they would drop a little, from ABOUT 25.7V by about 1 to 2 volt. But your UNSUITABLE batteries are too high impedance and voltage will fall to around 18 to 20V and worse triggering the controllers protection circuits and stopping the chair. Getting worse as they become discharged, or after damage it causes and deterioration in use in a couple of months.
When you get new batteries, connect all 4 with jumper cables on the bench in parallel.Charge at 13.5 to 13.6 for 2 days
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