PSA: Don't use AGMs Batts Underhood

[RET2]

I drop in my personal experience , and you come to the conclusion yourself .
I have 2 AGM Optima 75 ah in my motor bay .
the truck has seen extensively trips for aprox 10 years in the desert of Sahara during august , rather hot period .
the 2 batteries are there to start the motor and fridge ,plus some lights .
charging system is by standard alternator only .
after 14 years of service they are still running , not to the top , but decently well .
say 80 % aprox .
will hold my fridge for 1 full day in summer without charging , second day will be more critical .
starting is never a problem .

shall I move the batteries or shall I keep them ?

just my 14 cents in 14 years

Personally at 14 yrs I would retire them.

 

[renago]

Why ?

 

[RET2]

Why ?

Batteries belong to that group of items that when they work it's wonderful however when they don't it always seems to be at the worst time or place. You're
for certain going to need to replace them given 14 years of service, so given their age why not replace when and where you choose. Sale pricing and availability of your choice?

 

[04UZJ100]

Batteries belong to that group of items that when they work it's wonderful however when they don't it always seems to be at the worst time or place. You're
for certain going to need to replace them given 14 years of service, so given their age why not replace when and where you choose. Sale pricing and availability of your choice?

Agreed. It’s 5 years on tires and batteries for me. Regardless of usage/mileage.

 

[renago]

I see your point of view.
At present the only concern I have is if they can hold my extra services ( mainly fridge and webasto heater) the hot summer days and nights when I am camping in a remote area .
I do have a monitoring system for the charge , and a small petrol generator, in case I will have long stays with no hook up to the grid or charging via car.
Thinking also to put a solar panel on the roof .
The residual life in my batteries is difficult to tell , certainly not very long .
But life is still there .
I will keep dragging on till I can squeezing out all till the are next to die .
Will keep you noticed when they pass away .