HP MSA1510i 120978-001 Replacement Battery 4.8V 250mAh
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HP MSA1510i 120978-001 Replacement Battery 4.8V 250mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
HP MSA1510i 120978-001 Replacement Battery 4.8V 250mAh - is backordered and will ship as soon as it is back in stock.
Voltage
4.8V
Amp
250mAh
HP MSA1510i iSCSI Controller — 4.8V Ni-MH Replacement Battery (120978-001)
This is a 4.8V, 250mAh Ni-MH cache backup battery for the HP MSA1510i iSCSI RAID controller and compatible ProLiant server platforms. It backs up the controller's write cache during a power loss event, preventing data corruption when main power drops. Voltage and cell chemistry match the OEM specification at 4.8V Ni-MH.
- MSA1510i and ProLiant platform compatibility: These controllers share the same 4.8V Ni-MH cell format, connector pinout, and BMS handshake across the MSA1510i, ML370, ML570, and rx2600 lines. The cache protection circuit expects the same charge termination profile across all supported platforms.
- Bench tested on actual hardware: We ran this cell through charge, load, and simulated power-loss cycles on the bench. The BMS accepted the cell, completed the handshake, and the controller transitioned from write-through to write-back after the learn cycle finished.
- Post-swap learn cycle requirement: After installing this battery in the MSA1510i or a ProLiant array controller, trigger a learn cycle from the management interface. Without it, the controller cannot calculate the backup window for the new cell and will hold write-through mode indefinitely — no cache performance until the cycle completes.
RAID controller staying in write-through mode after battery swap
Write-through mode after a battery replacement is almost always a learn cycle that never ran, not a faulty cell. The controller suspends write-back until it recalibrates the backup window estimate against the new cell's actual charge curve. On HP array controllers, use the ACU (Array Configuration Utility) or HPSSACLI to initiate the learn cycle manually. Write-back re-enables once the controller confirms the cell holds charge above the minimum backup threshold — typically after one full charge and discharge cycle.
Management console showing a battery error days after installation
HP array controllers run their battery self-assessment on a timed schedule, not at boot. If the console flags a battery error two or three days after a swap, it means the scheduled assessment ran before the learn cycle finished recalibrating the new cell. The reported error clears on the next assessment cycle once the backup window estimate is valid. Check the controller event log — if the error timestamp aligns with the assessment interval rather than the swap time, let the learn cycle complete before treating it as a failed cell.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HP
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The controller accepted the new battery but the backup window shown in HPSSACLI looks shorter than it should — is the cell faulty?
A shorter-than-expected backup window on a new Ni-MH cell is normal on the first or second assessment cycle. The controller's backup window estimate is built from charge data collected over multiple learn cycles, and a fresh cell hasn't accumulated enough history yet. The estimate recalibrates over two to three full cycles as the controller maps the actual capacity of the new cell. Run `hpssacli ctrl slot=X show detail` after the second learn cycle completes and compare the backup window figure again before drawing conclusions.
The battery self-test is failing on the controller — what actually causes that on a new cell?
A self-test failure on a new cell usually means the learn cycle hasn't run or hasn't completed yet. The controller measures charge acceptance and discharge rate during the self-test, and a cell that hasn't been through a full learn cycle won't produce data that satisfies the pass threshold. On HP ProLiant array controllers, the learn cycle can take 24 to 72 hours depending on load and charge state when the cycle was initiated. Confirm the cycle status with `hpssacli ctrl slot=X show detail` — if the learn cycle is still listed as in-progress or pending, wait for it to finish before treating the self-test result as definitive.
The replacement cell isn't holding charge between scheduled controller assessments — what's going wrong?
Ni-MH cells in low-draw standby applications like RAID cache backup are vulnerable to capacity fade from extended float charging, where the controller trickle-charges the cell continuously between assessments. If the cell discharges faster than expected between tests, check whether the controller firmware is applying the correct float voltage for Ni-MH chemistry — some older ProLiant array controller firmware revisions default to a charge profile tuned for older NiCd cells, which over-charges Ni-MH at float. Check the HP SPP (Service Pack for ProLiant) version installed and apply current firmware, then re-run the learn cycle. The resting voltage on a healthy fully-charged 4.8V Ni-MH cell should sit between 5.4V and 5.6V immediately after charge termination.
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