User Manual

Electrolyte should be kept

at 1/2” below vent tube.

Electrolyte

level

Open cell

1/4” - 1/2”

Maximum electrolyte level speciﬁed

by the battery manufacturer

FIGURE 7:

Electrolyte level

6mm - 13mm

1/4" - 1/2"

Electrolyte level should

be kept below vent

tube to prevent overflow

during charge.

CAUTION: Do not add water or electrolyte to cells before initial charging unless plates are

xposed. If so, add distilled water until plates are submerged. Please contact Rolls Technical

Support if you have any questions or concerns.

NOTE: If the battery cells require watering more than once every two (2) months the

programmed charging voltages may be too high. Adjust and monitor accordingly. If a particular

cell requires significantly more water than others this may be a sign of charge imbalance in the

battery bank caused by resistance and/or cell failure. Typically, Series 4000 & 4500 models will

require watering every 30-60 days. Series 5000 batteries generally require watering every

60-90 days as these models are designed with a higher electrolyte reserve allowing longer

watering intervals. Frequency may vary considerably due to operating temperature, depth of

discharge, cycle frequency and humidity.

BATTERY MAINTENANCE & STORAGE

Batteries should be kept clean at all times. If installed or stored in a dirty location, regular

cleaning should be performed. Before doing so, assure that all the vent caps are tightly

fastened. Using a solution of water and baking soda (100g per litre), gently wipe the battery

and terminals with a damp sponge, then rinse with water and wipe dry.

A common cause of failure with Flooded battery banks is poor maintenance. Systems are

often professionally installed and maintenance left to homeowners who are unaware of

the requirements or simply choose not to complete the proper maintenance procedures. To

maintain cycle life and protect your investment, Flooded batteries should be checked regularly

and topped up with distilled water as needed. Customers will often neglect this for extended

periods of time, and when doing so, over-water the cells resulting in loss of electrolyte,

overflow during charging and/or corrosion issues. Failing to top up cells may result in plate

exposure, overheating and possible explosion.

ELECTROLYTE - ADDING DISTILLED WATER

Only distilled (preferred), deionized or reverse osmosis water should be used in Flooded

battery cells. Improper watering may cause internal cell damage. Test water to confirm

a PH reading of 7 or less and no Total Dissolved Solids (TDS < 5 PPM).

NOTE: Do not add sulfuric acid to Flooded battery cells during normal top up. In the case

of accidental spill, premixed electrolyte (1.265 S.G.) may be used to refill cells.