Setup Improvments for offroad

Harleyx3 · 04-01-2015, 01:55 PM

Thank you sir. So is the charger I have a one two or three stage charger? Also do I just check each battery with a volt meter or check positive from one battery and negative from another?

JohnnieB · 04-01-2015, 03:03 PM

Quote:

Originally Posted by Harleyx3

Thank you sir. So is the charger I have a one two or three stage charger? Also do I just check each battery with a volt meter or check positive from one battery and negative from another?

It is a single stage charger (ferroresonant transformer design)
Here is a manual for it.

For the individual batteries, from one post to the other one the same battery.
For the whole pack, from the main negative post to the main positive post.

Harleyx3 · 04-02-2015, 06:54 AM

So I went home and looked and the tires are the under 15psi on the front and under 10 psi on the rear. Also I charged the battery 4 hours and while it was on the charger it read 43.3 volts. After it shut off and sat for 30 minutes the battery pack was 38.91 with each battery being 6.47, 6.46, 6.52, 6.50, 6.48, 6.47. This morning the pack reads 38.43. I put it back on charge and will test again in 12 hours.

JohnnieB · 04-02-2015, 08:11 AM

The battery voltages are looking pretty good.

A 100% SoC is 2.137 VPC (Volts per Cell), or 38.47V for a 36V pack, so your PW+ appears to be adequately charging them.

I'd give the batteries a few more back-to-back charges over the next few weeks and then about once a month thereafter.

------------
The 10PSI max inflation pressure tires on the rear could very well be the source of the mechanical drag that is holding back your cart and the 15PSI max inflation pressure tires on the front are probably a contributing factor.

Some tires have a Bead Seating Pressure stamped on the sidewall in addition to the Max Inflation Pressure, so don't exceed the bead seating pressure, but one way of determining if it is the tires holding the cart back is to temporarily kick them up to about 20 PSI (or the Bead Seating Pressure -- whichever is lower) and see if the speed and hill performance improves.

Harleyx3 · 04-02-2015, 08:43 AM

Johnnie thank you so much. You have been a big help. I love this forum already.

04-01-2015, 01:55 PM	#11
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15	Re: Setup Improvments for offroad Thank you sir. So is the charger I have a one two or three stage charger? Also do I just check each battery with a volt meter or check positive from one battery and negative from another?
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15

04-02-2015, 06:54 AM	#13
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15	Re: Setup Improvments for offroad So I went home and looked and the tires are the under 15psi on the front and under 10 psi on the rear. Also I charged the battery 4 hours and while it was on the charger it read 43.3 volts. After it shut off and sat for 30 minutes the battery pack was 38.91 with each battery being 6.47, 6.46, 6.52, 6.50, 6.48, 6.47. This morning the pack reads 38.43. I put it back on charge and will test again in 12 hours.
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15

04-02-2015, 08:11 AM	#14
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Setup Improvments for offroad The battery voltages are looking pretty good. A 100% SoC is 2.137 VPC (Volts per Cell), or 38.47V for a 36V pack, so your PW+ appears to be adequately charging them. I'd give the batteries a few more back-to-back charges over the next few weeks and then about once a month thereafter. ------------ The 10PSI max inflation pressure tires on the rear could very well be the source of the mechanical drag that is holding back your cart and the 15PSI max inflation pressure tires on the front are probably a contributing factor. Some tires have a Bead Seating Pressure stamped on the sidewall in addition to the Max Inflation Pressure, so don't exceed the bead seating pressure, but one way of determining if it is the tires holding the cart back is to temporarily kick them up to about 20 PSI (or the Bead Seating Pressure -- whichever is lower) and see if the speed and hill performance improves.

04-02-2015, 08:43 AM	#15
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15	Re: Setup Improvments for offroad Johnnie thank you so much. You have been a big help. I love this forum already.
Harleyx3 Not Yet Wild Join Date: Mar 2015 Posts: 15

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