[magmash]

Hi folks

for you guys working with backup systems (Battery banks), what is the recommend charging current to charge batteries with, Is there any formula.

My experience tells me that 10% of the rated battery Ah is good to go with as a charging current.

 

[brian john]

Hi folks

for you guys working with backup systems (Battery banks), what is the recommend charging current to charge batteries with, Is there any formula.

My experience tells me that 10% of the rated battery Ah is good to go with as a charging current.

Constant current or constant voltage?

Lead Acid or Ni-Cad

Valve Regulated or Flooded

Google IEEE Stationary Battery Standards

 

[magmash]

Lead Acid

Flooded


P.S

I do the google search for Google IEEE Stationary Battery Standards

 

[brian john]

Lead Acid

Flooded


P.S

I do the google search for Google IEEE Stationary Battery Standards

Typically we do constant voltage with current limited to a set value, and this value is typically based on the cost of the charger. High current chargers are expensive.

 

[magmash]

But high charging current reduces the life of the battery as i have noticed

 

[RIVETER]

Hi folks

for you guys working with backup systems (Battery banks), what is the recommend charging current to charge batteries with, Is there any formula.

My experience tells me that 10% of the rated battery Ah is good to go with as a charging current.

I have four batteries and I just run a Harbor Freight $4.99 trickle charger on them.

 

[brian john]

But high charging current reduces the life of the battery as i have noticed

Temperature!!!!!!

We use constant voltage with current limiting chargers.

 

[magmash]

Temperature!!!!!!

We use constant voltage with current limiting chargers.

Hmm...


But is there any rule of thumb for the current ?

 

[brian john]

Hmm...


But is there any rule of thumb for the current ?

There are mathematical formulas based on size of battery, discharge rate, depth of discharge, necessary time to get back to 100% recharge.

All this is in IEEE 450 (I THINK) I have the standards in the office.