Switched off the charger and put a light load of around 3A and in just 24hrs...
Twin Varta 95Ah supplied from new in 2017
Twin Varta 95Ah supplied from new in 2017
Looks like my long suffering AGMs are dead
- Thread starter Driventemple
- Start date
- Sep 22, 2023
- 743
- 698
- Funster No
- 98,988
- MH
- 4 berth coachbuilt
Could be a lot worse after 8 years.
Let's assume your light load is really only 3 amps.. Then, 3 amps for 24 hours is 72 AmpereHours. (Ah)
with Lead Acid batteries, you can expect to use them down to 50% of capacity.
So, that works out at 50% of 2 x 95 = 95Ah
72 instead of 95 after 8 years could be a lot worse and if you have been testing by running them down to the low voltage shown in your graph, then Yes, I agree, it is time to replace them.
If you have suitable chargers, go lithium and save yourelf a lot of payload.
Let's assume your light load is really only 3 amps.. Then, 3 amps for 24 hours is 72 AmpereHours. (Ah)
with Lead Acid batteries, you can expect to use them down to 50% of capacity.
So, that works out at 50% of 2 x 95 = 95Ah
72 instead of 95 after 8 years could be a lot worse and if you have been testing by running them down to the low voltage shown in your graph, then Yes, I agree, it is time to replace them.
If you have suitable chargers, go lithium and save yourelf a lot of payload.
Go lithium. Almost as cheap as agm .half the weight and more than twice the power availabity
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