# Battery for Dell PERC T40JJ 1.8Wh 500mAh, rechargeable backup battery

**URL:** https://aio.lv/en/product--dell-t40jj--12402251
**Data updated:** 2026-04-29 13:50 (EEST)
**Category:** Portable Device Batteries
**Manufacturer:** Dell
**Manufacturer code:** T40JJ
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 99.49 €
**Prices and availability valid until:** 2026-08-23 23:59
**Price without VAT (21%):** 82.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dell-t40jj--12402251

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.08.2026 | free |
| Pickup points | 26.08.2026 | 1.79 EUR |
| Courier delivery to door | 26.08.2026 | 4.99 EUR |

## Summary description

Replacement rechargeable battery for Dell PERC systems, model T40JJ, rated 1.8Wh (500mAh). Designed to provide backup power for server controller functions and preserve configuration data during main power loss. Suitable for maintenance or replacement in compatible Dell PERC controllers to ensure continuity of RAID management and battery-backed operations.

## Long description

Replacement rechargeable battery designed for Dell PERC controller modules. This compact battery provides 1.8Wh (500mAh) of backup energy to preserve RAID controller cache and configuration data when main power is interrupted. It is intended for maintenance or replacement in compatible Dell PERC systems to restore or maintain battery-backed write operations and ensure continued management of storage arrays.
Advantages
This battery offers a direct form-fit replacement that restores backup power capacity for Dell PERC controllers. With its rated energy and capacity, it helps protect cached write data during short-term power losses and supports orderly shutdowns or data flush procedures. The rechargeable chemistry allows repeated charge/discharge cycles so the controller can rely on the battery for multiple events without immediate replacement.
Suitable for (tasks / use cases)
Replacing depleted backup battery in compatible Dell PERC controller modules
Maintaining RAID cache protection and preserving configuration settings during power interruptions
Server maintenance and component refresh in data center or rack-mounted servers using Dell PERC
When it may not be suitable
This battery is specific to Dell PERC controller backup applications and may not be compatible with other devices or battery housings. It is intended for short-term power backup of controller cache and is not designed to power a server or external hardware for extended periods. For systems requiring long-duration UPS support or batteries with different voltage or capacity, a different solution is needed.
Key specifications
Energy capacity: 1.8 Wh
Rated capacity: 500 mAh
Rechargeable: Yes
Intended application: Backup power for RAID controller cache and configuration retention
How to use
Install the battery into the designated socket or holder on the Dell PERC controller according to the server manufacturer’s service manual. Ensure the host system is powered down or follow hot-swap procedures recommended by Dell if supported. After installation, verify controller status in system management tools to confirm the battery is recognized and the backup function is active. Periodically check battery health through the controller management interface and replace when the controller indicates reduced capacity or end-of-life.
What to consider before purchase
Compatibility with your specific Dell PERC controller model and server chassis
Required energy and capacity for your controller’s backup requirements
Installation access and whether professional service is needed for replacement
End-of-life indicators and expected service life under your server workload
Usage recommendations
Store and operate the battery within the temperature and humidity ranges recommended by the server manufacturer. Follow Dell’s guidelines for replacement intervals and disposal. After installation, monitor battery condition via the PERC management interface and schedule replacement when capacity falls below the controller’s acceptable threshold to maintain reliable cache protection.

## FAQ

### How much does the Dell PERC Battery T40JJ 1.8Wh 500mAh cost, and is it available for purchase?

The price is 99.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 21.08.2026 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. All transactions are 100% secure and encrypted.

### 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 Dell 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 Dell 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