2V, VRLA Batteries
Design & Construction
| Positive Plate | : | Flat pasted type with Lead Alloy to impart deep discharge capability, long life and low self discharge properties to the grid. |
| Negative Plate | : | Flat pasted type with Lead Calcium Alloy to impart Maintenance Free properties to the grid. |
| Separator | : | Highly porous and Absorbent Micro porous Fibre Glass Mat (AGM) Separator |
| Container & Lid | : |
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| Safety Valve | : | Self-resealing, explosion-proof, pressure regulated safety valve With porous Acid filter. |
| Terminals | : | Lead terminals with conductive brass inserts ensuring high discharge characteristics. |
Salient Features
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Design float life of 20 years on float with recommended charging method. | |
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Design cycle life @ 27° C 1200 cycles at 80% Depth of Discharge |
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Very low internal resistance; superior high current discharge performance. | |
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Safety valve automatically regulates the internal pressure of the cell and “special double layer” sealing structure at terminals fully solves the acid leakage problem from terminals. | |
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The porous “acid filter” in the vent plug retains acid within the cell and “flame arrestor” in the vent plug avoids risk of explosion. | |
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Full capacity can be reached for the first time itself @C/10 discharge performance of battery. | |
| NOTE: | All values are rated at 27 degree Celsius. | |
Benefits
| The benefits of VRLA batteries are: | |
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No electrolyte filling and initial charging required at site |
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Never requires topping up during its cycle life |
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Rugged construction |
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Lighter and easy to install |
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Safe and explosion proof |
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Can be operated in any position. |
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User friendly |
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Office compatible |
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System compatible |
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Long life |
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High integrity |
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Low self discharge rate during storage in open condition |
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High energy density |
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Low temperature operation |
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Deep cycle as well as high rate discharge capability |
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Savings of 45% in space, 40% in volume and 30% in weight over conventional batteries. |
Technical Specifications
| Float voltage | : | 2.25+/- 0.01 VPC at 27°C |
| Boost voltage | : | 2.30+/- 0.01 VPC at 27°C |
| AC Ripple | : | Shall not exceed 3% RMS |
| Operating temperature | : | -20oC to +55°C |
| Life | : | 20years designed life at 27°C on full float with recommended charging method. |
| Cycle life | : | 1200 cyles at 80% depth of discharge at 27°C 2000 cycles at 50% depth of discharge at 27°C 4000 cycles at 20% depth of discharge at 27°C |
| Type of charging | : | Constant potential with current limited to 20% of the |