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Old 07-09-2014, 09:46 AM   #1
BeachBumTech
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Default OEM State of Charge Meter

Are there any meters, preferably digital, that fit the OEM dash plate with the cutout for the meter? I've tried two different ones now with no luck.

Do the digital DATEL meters fit?
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Old 07-09-2014, 11:58 AM   #2
JohnnieB
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Default Re: OEM State of Charge Meter

Not aware of any DVMs that fit OEM panels, but there are replacement panels made for DVMs.

The one I use is the PDS version shown on this page:
http://www.cartsunlimited.net/Digita...ry_Meters.html
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Old 07-09-2014, 12:14 PM   #3
BeachBumTech
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Default Re: OEM State of Charge Meter

Thanks. Just ordered one from the site. Wish they had a black option.
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Old 07-09-2014, 12:16 PM   #4
BeachBumTech
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Default Re: OEM State of Charge Meter

@johnnyb:
off topic, but I notice in your sig that you are running 42V.
I read that Lester 36V chargers actually charge up to 45V (above 40 drops to 6amps).
Which charger model are you using?

I have 36 now and was trying to decide if 42 would be sufficient or if I should bump up to 48.
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Old 07-09-2014, 01:06 PM   #5
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Default Re: OEM State of Charge Meter

Quote:
Originally Posted by BeachBumTech View Post
@johnnyb:
off topic, but I notice in your sig that you are running 42V.
I read that Lester 36V chargers actually charge up to 45V (above 40 drops to 6amps).
Which charger model are you using?

I have 36 now and was trying to decide if 42 would be sufficient or if I should bump up to 48.
It is your thread, so you determine the topic.

The charger has to match the pack voltage.
For legacy type chargers, the cutoff voltage is about 2.5VPC (Volts per Cell) which works out to about 45V for 36V packs (18 cells), about 52.5V for 42V packs (21 cells) and about 60V for 48V packs (24 cells).

For the more modern chargers that use dV/dT (change in Volts over change in Time), the VPC gets a bit higher.

I'm using a 42V DPI Accusense charger that goes into float charge after the regular charge cycle is terminated using dV/dT technology.
http://www.cartsunlimited.net/48v_Battery_Charger.html

The 42V and the 48V DPI charger use the same transformer, so my 42V charger can be converted to a 48V charger by replacing the 42V PC board with a 48V PC board (the PC board is the charger )

Since you have a 650A controller, you either have, or should have, a Super-Duty (400A/1000A) solenoid that runs at 36V, 42V and 48V.

I went with 42V because 7 x 6V batteries fit under the seat without any hassle and using 245AH batteries gave me the range I was looking for. I ended up with speed in the upper 20's and a lot of torque, but that was incidental.

Mathematically, going from 36V to 42V will up your speed and torque by about 16.7%, while going to 48V will up them by 33.3%.

If you are now getting about 17 MPH on the 23" tires, you may get about 19.8 at 42V and 22.6 at 48V, but there are other factors involved, so you may not reach those speeds.
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