Onboard Charger Killswitch

Rwalsh77 · 02-20-2018, 04:46 PM

Also note, the relay actually says 240vac on the side of it. Odd since the part number is the 48vdc one.

Are they interchangeable?

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Sergio · 02-20-2018, 04:46 PM

This is an example with quick connectors:

https://www.mouser.com/ProductDetail...AENZrAmmiTg%3d

The 2 small 3/16" tabs get connected to each of the incoming AC power wires (white and black).

The 1/4" N.C. tab gets connected to the +48v (or whatever voltage you are using with your pack) power source.

The 1/4" COM tab gets connected to the key switch.

The 1/4" N.O. tab is unused.

No suppression diode should be used with the relay since it is AC.

Edit: The 240vAC note You see refers to the relay contacts, not the activation coil.

Rwalsh77 · 02-20-2018, 04:55 PM

Thank you...

I learned something new today!
Everyday's a school day!

Rwalsh77 · 02-20-2018, 05:13 PM

What about this part
https://www.amazon.com/American-Zett...s=120vac+relay

Wired like this?

I think your description neglected the charger but maybe I misinterpreted it as well

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Sergio · 02-20-2018, 06:18 PM

I was thinking the charger would be always plugged to the pack and the relay would only disable the cart, but I guess you have reason to believe it can provide a parasitic drain when not plugged to AC?

The green and blue lines are confusing on the coil contacts and they should not be there, but Yes, Your description is correct.

So that charger has a 5 amp output, how many AH is your lithium pack?

Rwalsh77 · 02-20-2018, 06:58 PM

Correct. Not really “reason the believe” but more playing it safe.

Battery is made up of 10 Nissan Leaf packs. Each pack is 2 lithium cells. 2 sets of 5 packs in parallel and the end result is 10s2p lithium pack. Comes out to around 135ah. lithium is about 90% efficient vs FLA at 45%. Estimated FLA equivalent of 270ah

Edit: 58ah each not 65ah. Final result is 112ah and a FLA equivalent of about 232ah

I’ve gone about 16 miles on the current charge and I’m sitting at 39.9v I’m running it down to 38v which is the minimum just to dial in my new voltmeter in the dash.

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scottyb · 02-20-2018, 07:44 PM

I love when you are asked a question without crucial information

Rwalsh77 · 02-20-2018, 07:58 PM

Quote:

Originally Posted by scottyb

I love when you are asked a question without crucial information

Sorry man. My fault.

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scottyb · 02-20-2018, 08:07 PM

No worries - I did not know what we talking about. You're in good hands now.

Rwalsh77 · 02-20-2018, 08:31 PM

Regardless, my cart wouldn’t be running without you man. That F/R switch is the best functional upgrade!!

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02-20-2018, 04:46 PM	#11
Rwalsh77 Gone Wild Join Date: Dec 2017 Location: Mesa, AZ Posts: 155	Re: Onboard Charger Killswitch Also note, the relay actually says 240vac on the side of it. Odd since the part number is the 48vdc one. Are they interchangeable? Sent from my iPhone using Tapatalk

02-20-2018, 04:46 PM	#12
Sergio Gone Wild Join Date: Sep 2012 Location: Charlotte, NC Posts: 9,329	Re: Onboard Charger Killswitch This is an example with quick connectors: https://www.mouser.com/ProductDetail...AENZrAmmiTg%3d The 2 small 3/16" tabs get connected to each of the incoming AC power wires (white and black). The 1/4" N.C. tab gets connected to the +48v (or whatever voltage you are using with your pack) power source. The 1/4" COM tab gets connected to the key switch. The 1/4" N.O. tab is unused. No suppression diode should be used with the relay since it is AC. Edit: The 240vAC note You see refers to the relay contacts, not the activation coil.

02-20-2018, 04:55 PM	#13
Rwalsh77 Gone Wild Join Date: Dec 2017 Location: Mesa, AZ Posts: 155	Re: Onboard Charger Killswitch Thank you... I learned something new today! Everyday's a school day!

02-20-2018, 05:13 PM	#14
Rwalsh77 Gone Wild Join Date: Dec 2017 Location: Mesa, AZ Posts: 155	Onboard Charger Killswitch What about this part https://www.amazon.com/American-Zett...s=120vac+relay Wired like this? I think your description neglected the charger but maybe I misinterpreted it as well Sent from my iPhone using Tapatalk

02-20-2018, 06:18 PM	#15
Sergio Gone Wild Join Date: Sep 2012 Location: Charlotte, NC Posts: 9,329	Re: Onboard Charger Killswitch I was thinking the charger would be always plugged to the pack and the relay would only disable the cart, but I guess you have reason to believe it can provide a parasitic drain when not plugged to AC? The green and blue lines are confusing on the coil contacts and they should not be there, but Yes, Your description is correct. So that charger has a 5 amp output, how many AH is your lithium pack?

Today
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02-20-2018, 06:58 PM	#16
Rwalsh77 Gone Wild Join Date: Dec 2017 Location: Mesa, AZ Posts: 155	Onboard Charger Killswitch Correct. Not really “reason the believe” but more playing it safe. Battery is made up of 10 Nissan Leaf packs. Each pack is 2 lithium cells. 2 sets of 5 packs in parallel and the end result is 10s2p lithium pack. Comes out to around 135ah. lithium is about 90% efficient vs FLA at 45%. Estimated FLA equivalent of 270ah Edit: 58ah each not 65ah. Final result is 112ah and a FLA equivalent of about 232ah I’ve gone about 16 miles on the current charge and I’m sitting at 39.9v I’m running it down to 38v which is the minimum just to dial in my new voltmeter in the dash. Sent from my iPhone using Tapatalk

02-20-2018, 07:44 PM	#17
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: Onboard Charger Killswitch I love when you are asked a question without crucial information

02-20-2018, 08:07 PM	#19
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: Onboard Charger Killswitch No worries - I did not know what we talking about. You're in good hands now.

02-20-2018, 08:31 PM	#20
Rwalsh77 Gone Wild Join Date: Dec 2017 Location: Mesa, AZ Posts: 155	Re: Onboard Charger Killswitch Regardless, my cart wouldn’t be running without you man. That F/R switch is the best functional upgrade!! Sent from my iPhone using Tapatalk

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