2019 Tempo 48V - Battery light comes on after driving for 10 min

[RJM]

Hi Guys,

I'm having an issue with my dash battery light coming on and staying on. I charge the cart fully, then after driving for ten min the light comes on and stays on. I just bought the cart and was told the batteries load tested at 85%. The batteries are Trojan, made in 2019. I'm hoping/thinking the batteries are fine, is there anything else that would cause the light to come on? The cart fully charges (per the eric charger) in about 2 hours.

Thanks,
Ray

[Budule]

you need a volt meter hooked up while your driving to see how far its dropping when the light comes on.... but first make sure all connections and cables are clean and tight....

[RJM]

At rest, a couple hours after charge pack voltage is 50.9. Under load it dropped to 49.1. I took it out afterwards and same thing again, light on after 10 min or less. Each battery tested at 8.1.

I've had batteries that are 6 years old this doesn't happen with, very confused. This cart is still set to golf course speed so I have a tough time telling if there is power loss. It doesn't seem so.

-Ray

[RJM]

Now less than 2 hours later the ERIC charger is showing fully charged. Could this possibly be caused by the deal4t throwing me a charger that isnt programmed to the brand of batteries in my cart?

[RJM]

Do these battery readings look correct for 2 year old batteries?

Is there anything that can cause excess draw and run down otherwise good batteries quickly?

Thanks,
Ray

[Goober11]

If you have a Hydrometer check each cell. I had a cart do that with new Trojan batteries and one battery head a dead cell. Just a thought

[RJM]

Thanks very much, I was thinking/hoping it may be one battery. I will have someone test for me or get my hands on the equipment...