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GNP Batteries Absolyte® Now Available

Published by Jason Koffler on 11 August 2013

Absolyte® is one of the world’s best-selling large valve-regulated, lead-acid (VRLA) battery brands and is now available from Critical Power Supplies Ltd

Design life in years: 20 @ 25°C
Nominal capacity: 104–4800 Ah @ 25°C

Features and Benefits.

- Grid plate
- Single cell
- Valve regulated lead-acid batteries
- Maintenance-free (no topping-up)
- Special high current performance
- Recyclable

- System ampere-hour range – 104 to 4800 Ah to 1.75 VPC at 8-hour rate @ 25°C (77°F).
- Electrolyte – 1.310 specific gravity acid (nominal).
- Safety vent – 3-10 psi opening pressure, self-resealing.
- Terminals – Solid copper insert.
- Positive plate – Patented lead calcium tin silver alloy.
- Negative plate – Lead calcium grid alloy.
- 20 years design life in float applications at 25°C (77°F)
- 1200 cycles to 80% DOD at 25°C (77°F)
- Operating temperature – Temperature excursions between -40°C (-40°F) to +50°C (122°F) allowed (battery performance and life will be affected).
- Self-discharge – 0.5 to 1% per week maximum @ 25°C (77°F).
- Float voltage – 2.23 to 2.27 VPC.
- Container and Cover – Polypropylene is standard. Flame retardant, UL94 V-0/28% L.O.I. is optional.
- Enhanced post access for maintenance and battery health assessment


(See I/O Manual, Section 92.61, for detailed instructions)

1.0 Safety Precautions
1.1 Batteries contain sulfuric acid which can cause burns and other serious injury. In the event of contact with sulfuric acid, flush immediately and thoroughly with water. Wear safety goggles, rubber apron, and rubber gloves.
1.2 Batteries can generate explosive gasses, which when released, can explode and cause serious injury. Keep sparks, flames, and smoking materials away from the battery area.
1.3 Multi-cell systems attain high voltages, therefore, extreme caution must be exercised during installation of a battery system. Interrupt the AC and DC circuits before working on batteries or charging equipment.
2.0 Storage
2.1 Batteries shall be stored indoors in a cool (less than 25°C (77°F)), clean and dry location. The storage interval shall not exceed six (6) months, unless the battery receives an equalize charge within (6) months and every six (6) months thereafter as long as it remains in storage. Elevated temperatures (>25°C) will result in higher rates of self-discharge and require shorter charging intervals. Refer to I/O Manual, Section 92.61.
3.0 Charging (constant voltage only)
3.1 Initial and Equalize Charge. See table below for charge voltages and times for initial charge and equalize charge (see I/O manual for conditions that may necessitate an equalize charge). Charge voltage may be limited by system equipment. Determine the maximum volts that may be applied to the system equipment. This voltage, divided by the number of cells connected in series, will establish the maximum volts per cell (VPC) that are available.
2.30 24
2.35 12
3.2 Time periods listed are for 77°F (25°C). For other temperatures a compensation factor of 0.003 V/°F (0.0055 V/°C) per cell is recommended. Do not compensate higher than 2.35 VPC or lower than 2.20 VPC. Raise the voltage to the appropriate value. When charging current has tapered and stabilized (no reduction for three hours), charge for the hours shown in the above table or until the lowest cell voltage ceases to rise.
3.3 Float Charge. Recommended float voltage is 2.23 – 2.27 at 77°F. For other temperatures a compensation factor of 0.003V/°F (0.0055V/°C) per cell is recommended. Do not compensate higher than 2.35VPC or lower than 2.20VPC.
3.4 Operation of Absolyte cells at an average annual temperature above 77°F (25°C) and float voltages higher than those recommended will result in a reduction of life. Absolyte batteries should never be operated above 122°F
4.0 Connector Torque
4.1 Torque all terminal and intercell connections to 100 inch-lb at least once a year.
5.0 Inspection / Records
5.1 Monthly – Record battery terminal voltage, ambient temperature, pilot cell voltage.
5.2* Annually – Retorque connections, record battery terminal voltage, ambient temperature, individual cell voltages. *(Minimum requirements for warranty purposes.)