shirley_hkg wrote: Make sure your chair WORKS with only ONE 24V supply , before going lithium .
It will be complicated if it doesn't ..
Do the above first . Then you should measure the battery compartment and seek advise on cells .
shirley_hkg wrote: Make sure your chair WORKS with only ONE 24V supply , before going lithium .
It will be complicated if it doesn't ..
jehan wrote:okay Shirley, you want to see if the chair works with one bank of batteries which is 24 V 18 H ? ....… I'll try it… What's the reason?
jehan wrote:if the battery compartment actually is over 200 MM height then each bank can accommodate 4 prismatic cells of 60 AH each
https://www.ev-power.eu/LiFePO4-small-cells/Prismatic/LiFePO4-High-Power-Cell-3-2V-60Ah-Alu-case-CE.html#tab2
and 2 battery banks (of 4 cells each) makes for a total of 8 cells of 60 AH each which is 24 V 60 AH pack, 12 AH more than the headways
is this the way to go? anything else I should be looking at?
each battery compartment is currently accommodating lead batteries 370 MM long, 76 MM wide, 185 MM high ....but according to funky keyboards measurements it can accommodate 228 MM height… I will recheck that
8X THESE? https://www.ev-power.eu/LiFePO4-small-c ... se-CE.html
Each box dimension
Length = 362 MM
width = 78 MM
height = 203 MM
Burgerman wrote:200*130*36mm
8 of these ill fit??? I thought you had small battery spaces?Each box dimension
Length = 362 MM
width = 78 MM
height = 203 MM
They might I cant get my head around it! You need 4 per box.
shirley_hkg wrote:105Ah are rare and not ease to come across good quality one.
Go get the 90 or 75 Ah . 75 has higher C rate .
Burgerman wrote:You are wasting 100mm.
Also THOSE cells are uninsulated. The casing is metal. You will need to insulate with say 1mm of anything non conductive on bottom, sides, minimum. Or,
Lithium likes to be charged gently. Discharged gently (well away from max C) and kept between around 25 and 85% full. Then they last indefinitely... Do the opposite, a few months. Most cycle life figures are given at a very low discharge rates like 1/10th C or similar. ]
Hi… My controller is 70 A…
I'm looking for a power supply which is adjustable for voltage (13.5 V) as I am running lead batteries (four in parallel) along with the power supply,as a backup for the PL8.
So far, that's worked really well and when the power goes out, the PL8 stays on with the lead batteries.
I am in the process of switching to lithium with a 8S 72 AH pack and need a power supply to support it.
So far I've found
https://www.rcpitstop.co.uk/logic-rc-fu ... 7687-p.asp
http://www.chargery.com/adapter.asp
the S 600
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