Charging an Optima or AGM Battery
After handling the Optima product for 15+ years we would like to share the following:
See our NEW line of OPTIMA recommended Chargers (Battery Accessories)
Facts:- Batteries are designed to store electricity.
- Batteries do not make electricity.
- Batteries must be charged before any testing is accurate or effective.
- Alternators ARE NOT battery chargers!
- Seldom to batteries discharge / re-charge on their own.
- Deep Cycle batteries will take much longer to charge.
- Battery chargers need to be tested and amperage and the voltage checked manually.
- Sitting a battery on concrete does NOT discharge it!
Battery charging instructions:
* Voltage at the battery terminals when vehicle is running should Be from a minimum of 12.8 volts to < 15.0 volts
1) Charge the battery A MINIMUM OF 100 amps for 15 mins ( @ 14.5+ volts)
Questions to ask before having battery tested:How many amps is the alternator charging at full output?
How many volts is the alternator charging at full output?
How many amps draw is there on the battery, when application is NOT running?
(Put an amp meter between (+) cable and the (+) post of the battery)
Always use a voltage regulated battery charger with limits set to the above ratings. Overcharging can cause the safety valves to open and battery gases to escape, causing premature end of life. These gases are flammable! You cannot replace water in sealed batteries that have been overcharged. Any battery that becomes very hot while charging should be disconnected immediately. If the safety valaves have popped, warranty is void!
We suggest you print this out and share it with others!