Power Rite® | Applications & Features

Applications

Communication equipment: base station, PBX, CATV, WLL, ONU, etc.
Back-up for power failure: UPS, ECR, computer system back-up, sequencers, etc.
Emergency equipment: lights, fire and burglar alarm, radios, fire shutters, stop-position controls (for machines and elevators), etc.

Communication and telephone equipment: cellular phones (bag phones), transceivers, etc.
Electrically operated vehicles: picking carts, automated transports, electric wheelchairs, cleaning robots, electric automobiles, etc.
Tools and engine starters: grass shears, hedge trimmers, cordless drills, screwdrivers, jet-skis, electric saws, etc.
Industrial equipment/instruments and non-life critical medical equipment (electrocardiograph), etc.
Miscellaneous uses: integrated VTR/VCR, tape recorders, other portable equipment, etc.

A required-minimum quantity of electrolyte is impregnated into, and retained by the positive and negative plates and the separators; therefore electrolyte does not flow freely. Also, the terminals have a sealed structure secured by long adhesive-embedded paths and by the adoption of strong epoxy adhesives, which makes the battery leak-resistant. (Note) In standby/back-up uses, if the battery continues to be used beyond the point where discharge duration has decreased to 50% of the initial (i.e. Life judgment criteria), cracking of the battery case may occur, resulting in leakage of the electrolyte.

Expected trickle life 3 years (Temperature 25°C, discharge rate 0.25CA/1.75V/cell, discharge frequency every 6 months, 2.30V/cell charge).

Unlike the conventional batteries in which electrolyte can flow freely, SLA batteries do not need the specific gravity check of the electrolyte nor the watering structurally; this makes the battery function fully and makes maintenance easy.

Unlike the conventional batteries in which electrolyte can flow freely, SLA batteries generate no sulfuric acid mist or gases under the use condition we recommend. In uses under conditions other than recommended, however gas generation may occur, therefore do not design the battery housing with a closed structure.

Our SLA battery shows exceptional rechargeability even deep discharge, which is often caused by failure to turn off the equipment switch, followed by standing (approx. 1 month at room temperature is assumed).

Charging characteristics (constant voltage-constant current charging) of SLA batteries are exemplified below. Example of constant-voltage charge characteristics by current:

In order to fully utilize the characteristics of SLA batteries, constant-voltage charging is recommended.

Discharge current and discharge cut-off voltage Recommended cutoff voltages for 6V and 12V batteries consistent with discharge rates are given in the figure below. With smaller discharge currents, the active materials in the battery work effectively; therefore discharge cutoff voltages are set to the higher side for controlling overdischarge. For larger discharge currents, on the contrary, cutoff voltages are set to the lower side.

Note: discharge cutoff voltages given are recommended values.

Discharge Current vs. Cutoff Voltage

Control the ambient temperature during discharge within the range from -10°C to 60°C for the reason described below.
Batteries operate on electrochemical reaction, which converts chemical energy to electric energy. The electrochemical reaction is reduced as the temperature lowers, thus available discharge capacity is greatly reduced at temperatures as low as -10°C. For the high temperature should not exceed 60°C in order to prevent deformation of resin materials which house the battery or deterioration of service life.

Effect of temperature on discharge characteristics available discharge capacity of the battery varies with ambient temperature and discharge current as shown in the figure below.