Check individual battery voltages and ensure open circuit voltage (OCV) is above 2.13V per cell or 12.8V per battery and all cells / batteries being installed in a string are within +/- 0.03V for 2V cells & within +/- 0.18V for 12V batteries. If the cell or battery voltages vary beyond this, then the cell / battery voltages have to be equalized. Failure to do so will lead to early failures.
Connect batteries in such a way that OCV’s are in descending order from the positive terminal of the UPS i.e. If the battery voltages in a 4 battery system are 12.81V, 12.83V, 12.84V & 12.81V then batteries should be connected in the following order from the positive terminal of the UPS, 12.84V, 12.83V, 12.81V, 12.81V.
Connect the right terminal, choose the appropriate cable, and install the connectors firmly. Use a torque wrench and terminal protection to avoid short circuit.
Ensure batteries are placed on a rack insulated from the ground. Use rubber or wooden strips under the rack legs. If batteries are placed on the ground directly, ensure it’s placed on a rubber mat or wooden slab or any insulated material to prevent grounding.
Use battery in a good ventilated room / location
Check for proper torque at terminal bolt connections. Use a torque wrench wherever possible. If not, ensure the bolts are not loose, at the same time not over tightened.
For Relicell Aquasafe batteries, the recombination will work only if the Aquasafe vent plugs are installed. Do not over tighten the plugs during installation.