# Storage device backup battery for HP RAID controller 727258-B21 — single battery compatible with HP ProLiant DL/ML/SL

**URL:** https://aio.lv/en/product--hp-727258-b21--10499912
**Data updated:** 2026-03-11 11:53 (EET)
**Category:** Server Parts & Components
**Manufacturer:** HP
**Manufacturer code:** 727258-B21
**EAN:** 0887758394601
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 130.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 108.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-727258-b21--10499912

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Backup battery for HP RAID controller, model 727258-B21. Supplied as a single battery compatible with HP ProLiant DL, ML and SL server series. Designed to provide temporary power for RAID controller cache to preserve data during power interruptions and support controlled shutdowns and cache flush operations in enterprise storage environments.

## Long description

Backup battery for HP RAID controller, single unit compatible with HP ProLiant DL, ML and SL series servers. This storage device backup battery is designed to provide temporary power to the RAID controller cache, allowing cached write operations to be preserved during short power interruptions and enabling controlled shutdowns and cache flushes in enterprise storage environments.
Advantages
The battery provides reliable short-term power to maintain cached data integrity on the RAID controller during unexpected power loss. It is supplied as a single, replaceable module compatible with a range of HP ProLiant server models, simplifying maintenance and minimizing downtime. The design supports predictable cache behavior, helping to reduce the risk of data loss and improving system resilience for critical storage operations.
Suitable for
 Enterprise servers in racks and data center environments using HP ProLiant DL, ML or SL series
 Systems running RAID controllers that require cache retention during power events
 Maintenance and field replacement of RAID controller backup power modules
 Environments where controlled cache flush and graceful shutdown are necessary
Key specifications
 Form factor: single, replaceable backup battery module for RAID controller
 Primary function: temporary power supply for RAID controller cache retention
 Compatibility: designed for HP ProLiant DL, ML and SL server series RAID controllers
 Use case: supports cache flush, controlled shutdowns and preservation of cached writes during short power interruptions
 Installation: plug-in replacement module intended for use in server service bays or controller slots
How to use
Install the battery module according to the server and RAID controller maintenance procedure: power down the server if required by the specific service manual, remove the service-access cover, locate the RAID controller battery slot, and insert the module until it seats securely. Follow the controller firmware and server documentation to confirm battery recognition and health status. Replace the battery during scheduled maintenance or when diagnostic tools report end-of-life to ensure continuous cache protection.
Использование и обслуживание
Store and handle the battery in accordance with standard server maintenance guidelines and the manufacturer's safety instructions. Dispose of depleted batteries following local regulations for electronic waste.

## Specifications

| Feature | Value |
|---|---|
| Compatible products | HP ProLiant DL/ML/SL |
| Number of batteries included | 1 pc(s) |
| Device compatibility | RAID controller |

## FAQ

### How much does the HP RAID controller backup battery 727258-B21 cost, and is it available for purchase?

The price is 130.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can HP RAID controller backup battery 727258-B21 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All HP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10499912/59585593_large.webp