DELL
DELL C291H 6600 mAh 2.5 V RAID Controller Battery
Refurbished lithium-ion battery delivers 6600 mAh at 2.5 V to protect RAID-controller cache in Dell PowerVault MD3000 and MD3000i systems
- Reliable RAID cache backup with 6600 mAh lithium-ion cell
- Direct-fit replacement for Dell PowerVault MD3000 and MD3000i systems
- Rechargeable 2.5 V DC battery maintains controller data during power loss
- Matches OEM part numbers 0C291H JY200 0JY200 for drop-in compatibility
- Proprietary form factor ensures secure installation in supported arrays
RAID Controller Battery for Dell PowerVault
The Dell C291H is a proprietary lithium-ion battery designed to protect write-cache data on RAID controllers inside Dell PowerVault MD3000 and MD3000i storage arrays. It replaces OEM part numbers 0C291H and JY200 to maintain cache integrity during unexpected power loss. This refurbished unit is intended for administrators maintaining legacy storage infrastructure. ||
6600 mAh Capacity at 2.5 V Output
The battery delivers a nominal 2.5 V DC with a rated capacity of 6600 mAh, supplying sufficient hold-up power for the controller cache until mains power returns or a graceful shutdown completes. As a sealed rechargeable module it operates without active cooling and adds negligible acoustic or thermal load to the enclosure. Power draw is limited to the controller's own charging circuit. ||
Direct Replacement for MD3000 and MD3000i Systems
This module fits the proprietary battery slot on supported PowerVault controllers, restoring full cache-backup capability when the original cell reaches end of life. The upgrade is warranted when cache battery alerts appear or scheduled maintenance dictates proactive replacement. It does not add capacity beyond the original specification and is not compatible with other Dell storage families.
Highlights
- Reliable RAID cache backup with 6600 mAh lithium-ion cell
- Direct-fit replacement for Dell PowerVault MD3000 and MD3000i systems
- Rechargeable 2.5 V DC battery maintains controller data during power loss
- Matches OEM part numbers 0C291H JY200 0JY200 for drop-in compatibility
- Proprietary form factor ensures secure installation in supported arrays
Specifications
| Brand | Dell |
|---|---|
| Shipping weight | 2.31 kg |
| Package size | 165 × 38 × 25 mm |
Questions about this item
How do I install the C291H battery in a PowerVault MD3000 RAID controller, and what step is often missed?
Insert the proprietary-size pack into the controller's battery slot until it clicks, then let the RAID firmware initialise the new 6600 mAh cell before putting the array back online.
What maintenance or replacement will the C291H need over time?
The lithium-ion pack is rechargeable but will lose capacity after several hundred cycles; plan to swap it for a fresh C291H when the controller reports degraded backup time.
What limit appears first on the C291H during sustained RAID write-back workloads?
The 2.5 V DC output and 6600 mAh capacity set the energy budget, so extended power-loss events will drain the cell before the controller can flush all cached data.
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