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EnerSys
EnerSys Cyclon 2V 2.5Ah Sealed Lead Acid D Cell
A 2 V, 2.5 Ah sealed lead-acid D cell with 0.187" faston terminals, operating from -65 °C to 80 °C and rated for over 200 deep-discharge cycles
- Reliable power across extreme conditions from -65°C to 80°C operation
- Compact D-cell format at 34 mm diameter fits tight spaces
- 5 Ah capacity delivers sustained energy for critical systems
- Pure lead-tin VRLA AGM design enables 200+ deep discharge cycles
- Faston 0.187" termination allows quick, secure wiring
Cyclon 2V 2.5Ah Sealed Lead Acid D Cell
The EnerSys Cyclon 2V 2.5Ah cell is a sealed lead acid D-size battery built for high-rate charge and discharge. It uses a pure lead-tin VRLA AGM design that provides superior deep discharge recovery. This new battery suits equipment needing a robust 2 Volt power source in a 34 mm diameter by 61 mm height form factor.
Upgrading from standard D cells
The Cyclon replaces conventional D cells where longer cycle life and wider temperature tolerance are required. It delivers 200-plus full depth discharge cycles and up to 2000 charge cycles, far exceeding typical primary cells. The jump is worth it for applications that demand reliable rechargeability and a two-year shelf life without maintenance.
Limits of the 0.187" faston interface
The 0.187-inch faston termination limits current to what the tab and connector can safely carry. Operating range spans -65°C to 80°C, but sustained high-rate duty near the extremes will reduce achievable cycles. Capacity is fixed at 2500 mAh, so runtime scales directly with load and cannot be expanded without adding cells.
Highlights
- Reliable power across extreme conditions from -65°C to 80°C operation
- Compact D-cell format at 34 mm diameter fits tight spaces
- 5 Ah capacity delivers sustained energy for critical systems
- Pure lead-tin VRLA AGM design enables 200+ deep discharge cycles
- Faston 0.187" termination allows quick, secure wiring
Specifications
No published specifications for this item yet.
Questions about this item
Will the 34 mm diameter and 61 mm height fit my D-cell slot?
The cell measures 34 mm in diameter and 61 mm in height, matching the standard D form factor.
How do I connect the 0.187" faston tabs without damaging the seal?
Push the matching quick-disconnect terminals straight onto the tabs; do not solder directly to the terminals.
When should I replace the cell if it sits on the shelf for two years?
The rated shelf life is two years; after that, capacity may drop below the 2.5 Ah rating and the cell should be replaced.
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