PL 8 - Q and A section - How to Set up - Use etc,

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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Schultz5905 » 09 Mar 2018, 04:40

I have a jazzy select 6 and am building a 3p 8s battery using headway 15ah with 10c constant load availability. I am using two blade server supplys 24 volt 57v amp and a pl8v2 Charger.
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Burgerman » 09 Mar 2018, 04:55

You need this, but change the termination current from 100 to 150mA.

It had U1 batteries? You will double its range. And a little more.

Attached - remove .zip
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LiFe PO4 30Ah 24V 8S 100mA term.PS8.zip
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby robert97 » 02 May 2018, 03:24

powerlabPL8.jpg
PL8 with FUIM3

are most pl8 users connecting to PC/CCS software with the FUIM3?
do most people have the fragile serial/usb wires?
has anyone tried fitting the FUIM3 inside?
or hot melting to the pl8 case?
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby shirley_hkg » 02 May 2018, 05:16

Haven't heard any member here broke his FUIM3 yet, though its a must-get tools .
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Gnomatic » 02 May 2018, 15:21

I have one with each of my chargers and both work fine, no problems.
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby ex-Gooserider » 08 May 2018, 02:26

It does seem to me like a good idea to glue the FUIM board down to the charger with a bit of double stick foam tape... Thats what I've done... I also anchor the USB cable I plug into the FUIM so that any force gets applied to the cable, not the USB connector... Construction on the FUIM is pretty good, so I don't expect it to be unusually damage prone, but I feel better giving it as much protection as I can....

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Jazzy Select 6
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby expresso » 16 May 2018, 23:20

I have my PL 8 set to 50A -

what does everyone else use there charger at ?

would setting it to 60A max setting on the PL 8 do any harm or stress it ?
Quickie P222se - - 36ah ADD on pack -
Quickie S646se - - 105ah LifePo4 Pack + 30ah ADD ON - 135ah total
Quickie P220 - Indoor Chair
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Burgerman » 17 May 2018, 00:04

You are talking about input power?

Look at it like this. Set the input Amps to 20A for the following.

If you charge a 24V battery at say 28.8V and at 10A than the POWER you are putting OUT is 10A X 28.8V = 288 Watts. Its the Watts that matter here. Thats the measure of total power.

So if your power supply was set at say 20Volts output, and the charger needed this 288 Watts, (plus a bit wasted as heat that we will ignore) you would need to supply it this 20V x 14.4 Amps, because thats the same number of total Watts.
If however your power supply was set to only 10V, it would then need some 28.8Amps of current to equal that 288 Watts! (10V x 28.8A = 288W the same amount of power.

So your power supply input set to 20A isnt enough and so you would need to increase it to charge at the same rate. But if that exceeds the power supply capability you cant. The 50A you have it set to limits the max Amps the charger will take from your power supply to 50A. There are times when this may limit the charge current to your battery. But not at your 24V level. But it might on your 12V supply.
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby expresso » 17 May 2018, 00:32

yes i realize that with the 12V PSU - it wont allow it to go past 19A max charge -

is it Ok to set the PL 8 to its max setting 60A and just leave it - if it needs it it just pulls more from the PSU

what harm will happen if i left it at 60A -

its been at 50A the whole time - i am just curious now to know if its ok to set it to 60A and thats it ?
Quickie P222se - - 36ah ADD on pack -
Quickie S646se - - 105ah LifePo4 Pack + 30ah ADD ON - 135ah total
Quickie P220 - Indoor Chair
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby expresso » 17 May 2018, 00:42

the PL 8 i am using now with just a 12V PSU -

if i set it to 60A - it will just be able to charge at a faster rate ? work the PSU more - but its safe - for both charger and PSU this way ?

this set up is charging a chair with lead and ADD ON - on Quickiees chair - my friend - at 15A charge - its fine - but takes a while - in case she wanted to charge faster - i need to max the PL 8 to 60A ?

i just want to be sure its safe for the charger and PSU - but at least the charger
Quickie P222se - - 36ah ADD on pack -
Quickie S646se - - 105ah LifePo4 Pack + 30ah ADD ON - 135ah total
Quickie P220 - Indoor Chair
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby steves1977uk » 17 May 2018, 11:02

A 24v PSU would be less stressful for the PL8's internals, but a 12v PSU is still ok to use at low charging rates (15A or less).

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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Burgerman » 17 May 2018, 11:21

Setting to 60A will let it charge a 24v chair faster. By 20% approx. But its a lot of amps... And its going to generate more heat. I charge hobby lipos at 40A at the flying field flat out from my running car. About 14.4V. And it pulls 60A from the battery? It hasnt failed so far! But its unkind.
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby expresso » 17 May 2018, 16:09

OK - so its best to leave it alone the way i have mines set now - i have them all on 50A the PL 8

i dont have a problem with it even when i charged at 35A - just a bit louder but worked fine - with 24V PSU - - this was at the start - i know use 20A to 25A - and 12A for the Add On - both same time - two chargers going - -

was just curious what other users leave there PL 8 set at - i think it comes stock set to 40A ? or less maybe - will check the new one i have coming soon - it was on sale and i needed a spare -
Quickie P222se - - 36ah ADD on pack -
Quickie S646se - - 105ah LifePo4 Pack + 30ah ADD ON - 135ah total
Quickie P220 - Indoor Chair
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Re: PL 8 - Q and A section - How to Set up - Use etc,

Postby Burgerman » 17 May 2018, 16:15

Its really there, not to limit output power, but to prevent you overloading a power supply.

For eg you may have a need to run the charger from a small portable 12A power supply. On holiday. Or even as a hobby user, you might want to run it from your wheelchairs XLR connection. So set its INPUT to 12A and it will never pull more than 12A from the small power supply, or the chairs XLR connector. So it wont melt your small power supply or your powerchair! Or your cars cigar lighter socket...
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