Lester charger questions

vzdude · 05-24-2020, 01:52 PM

Ok....got a new Lester Summit II 1050W charger. Rebuilt my cart to 48V ( see my signature for the build thread). Now....6 of the 8 batteries were slightly used. Basically drove the cart around the block a couple times before upgrade. The other 2 were new with the same date code as the used ones. Anyhow, I never charged the batteries after the build, as I was obviously excited to drive the thing! Batteries started at 50.5V. Drove a few miles around town last night at varying speeds to break in the new motor. Voltage was down to about 47.8V upon return. Hooked up my new charger last night and it said 6 hours to full charge! ? ! ? Does that sound right after only a couple miles? Now.....at some point, the 110V breaker tripped during the night. ( figured out it was on the same circuit as my water heater in the garage ). Moved plug in to different outlet, and now it says 9 hours to full charge. Am I expecting too much? Or is this about normal? I did configure it for my Crown 205ah 6V batteries, according to the app, as well. Appreciate any input.

cgtech · 05-24-2020, 02:17 PM

47.8v is below 50% charged, so yes 6-9 hours sounds totally reasonable.

vzdude · 05-24-2020, 02:18 PM

Quote:

Originally Posted by cgtech

47.8v is below 50% charged, so yes 6-9 hours sounds totally reasonable.

Thanks! Good to know! I was questioning the additional 3 hours this morning, compared to last night. I noticed when I went to unplug the charger, the light was still on, even though the outlet didn't have any power. Guessing that the charger was actually a draw on the batteries, with no 110V, would be the reason for the additional time today, compared to last night.

mgray70 · 05-24-2020, 08:40 PM

I had an old man question me about that same thing the other day. You have to understand the different current rates (amps) going out, versus going in. You're drawing anywhere from 0-250 or more amps while driving, and you're charging anywhere from 0-25 amps with that charger. So can you see where charge times and drive times shouldn't equal? Picture a swimming pool being pumped out with a fire truck and being refilled with a garden hose as an analogy.

Sent from my SM-G970U using Tapatalk

05-24-2020, 01:52 PM	#1
vzdude Gone Wild Join Date: May 2010 Location: NW Indiana Posts: 283	Lester charger questions Ok....got a new Lester Summit II 1050W charger. Rebuilt my cart to 48V ( see my signature for the build thread). Now....6 of the 8 batteries were slightly used. Basically drove the cart around the block a couple times before upgrade. The other 2 were new with the same date code as the used ones. Anyhow, I never charged the batteries after the build, as I was obviously excited to drive the thing! Batteries started at 50.5V. Drove a few miles around town last night at varying speeds to break in the new motor. Voltage was down to about 47.8V upon return. Hooked up my new charger last night and it said 6 hours to full charge! ? ! ? Does that sound right after only a couple miles? Now.....at some point, the 110V breaker tripped during the night. ( figured out it was on the same circuit as my water heater in the garage ). Moved plug in to different outlet, and now it says 9 hours to full charge. Am I expecting too much? Or is this about normal? I did configure it for my Crown 205ah 6V batteries, according to the app, as well. Appreciate any input.

05-24-2020, 02:17 PM	#2
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Lester charger questions 47.8v is below 50% charged, so yes 6-9 hours sounds totally reasonable.

05-24-2020, 08:40 PM	#4
mgray70 Gone Wild Join Date: Apr 2013 Location: Deep Run, NC Posts: 2,544	Re: Lester charger questions I had an old man question me about that same thing the other day. You have to understand the different current rates (amps) going out, versus going in. You're drawing anywhere from 0-250 or more amps while driving, and you're charging anywhere from 0-25 amps with that charger. So can you see where charge times and drive times shouldn't equal? Picture a swimming pool being pumped out with a fire truck and being refilled with a garden hose as an analogy. Sent from my SM-G970U using Tapatalk

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