# Battery BTI RJ40G for DELL Latitude 5420 5520

**URL:** https://aio.lv/en/product--origin-storage-rj40g-bti--10525174
**Data updated:** 2026-01-14 12:57 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** origin storage
**Manufacturer code:** RJ40G-BTI
**EAN:** 5059902028570
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The BTI RJ40G battery is designed for DELL Latitude 5420 and 5520 laptops. It ensures reliable power supply and compatibility with your device. This battery is a perfect replacement for your original battery, providing long-lasting performance and efficiency.

## Long description

The BTI RJ40G battery is designed specifically for DELL Latitude 5420 and 5520 laptops. It provides a direct replacement power source compatible with the original battery form factor and connectors, helping restore mobile runtime and device portability. The battery is intended to deliver consistent voltage and acceptable cycle life for routine office, study, and travel use.
Advantages
This battery offers compatibility with DELL Latitude 5420 and 5520 models and fits the original battery bay without modification. It is built to meet standard safety and performance expectations for laptop batteries, providing stable power delivery under typical workloads. The unit aims to reduce unexpected shutdowns and supports normal charging and discharge behavior with the laptop's charging system.
Suitable for
Replacing a worn or failing battery in DELL Latitude 5420 and 5520 laptops
Extending mobile runtime for business travel and commuting
Students and professionals needing reliable on-the-go power
Repair shops and technicians servicing compatible Dell models
Key specifications
Compatibility: DELL Latitude 5420, DELL Latitude 5520
Form factor: internal replacement battery designed for the laptop's battery bay
Cell chemistry: lithium-ion (Li-ion)
Function: rechargeable battery for laptop power supply
Typical usage: office applications, web browsing, video playback, light multitasking
How to use
Power down the laptop and disconnect the AC adapter before starting the replacement. Remove the service panel or bottom cover following the device manufacturer's instructions, then carefully unplug and remove the existing battery. Insert the BTI RJ40G battery into the bay, ensuring the contacts align, and secure any retaining screws or latches. Reattach the cover, reconnect the AC adapter, and charge the battery fully before normal use. After installation, verify battery status in the operating system's power management utility.
Usage recommendations
Charge the battery to full capacity before first use and avoid deep discharges when possible. Use the laptop's built-in charging settings to optimize battery longevity, keep the device and battery contacts clean, and store the battery at moderate temperatures if the laptop will be unused for extended periods.

## Specifications

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |
| Battery capacity | 3941 mAh |
| Number of battery cells | 4 |
| Battery voltage | 15.2 V |
| Battery capacity | 63 Wh |
| Product colour | Black |

### Technical details

| Feature | Value |
|---|---|
| Type | Battery |
| Compatibility | Latitude 5420, 5520 |
| Brand compatibility | Dell |

## FAQ

### 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 origin storage 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 origin storage 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: battery technology, battery capacity, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10525174/59597817_large.webp