# Rechargeable battery ROCKET HR3-850-R2U AAA Nickel-Metal Hydride

**URL:** https://aio.lv/en/product--rocket-hr850b4--2024985
**Data updated:** 2025-12-29 10:34 (EET)
**Category:** Batteries
**Manufacturer:** ROCKET
**Manufacturer code:** HR850B4
**EAN:** 5908258327120
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-07-07 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rocket-hr850b4--2024985

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 16.06.2026 | 1.99 EUR |
| Courier delivery to door | 16.06.2026 | 4.99 EUR |

## Summary description

The ROCKET HR3-850-R2U is a rechargeable AAA battery featuring Nickel-Metal Hydride (NiMH) technology. It offers high capacity and long-lasting performance, making it ideal for powering various household devices. The blister packaging ensures safe storage and easy access. With a reliable charge cycle, this battery is an eco-friendly choice for your energy needs.

## Long description

The ROCKET HR3-850-R2U is a rechargeable AAA battery based on Nickel-Metal Hydride (NiMH) technology. Supplied in blister packaging, this 1.2 V battery comes as a set of four and is designed for repeated use in a variety of household devices. The cells are ready to use straight from the package, feature low self-discharge and are specified to withstand up to 1000 charge–discharge cycles without memory effect.
Advantages
Ready-to-use NiMH chemistry allows immediate installation in devices. The battery retains at least 70% of its nominal capacity after 12 months from charge, enabling long-term storage without frequent recharging. It is rated for up to 1000 cycles, offering extended service life compared with single-use cells. These batteries are compatible with standard chargers that support NiMH cells.
Suitable for
 TV remotes and audio controllers
 Portable electronics such as flashlights and toys
 Clocks, wireless mice and keyboards
 Household gadgets that require AAA (LR03) batteries
Key specifications
 Brand: ROCKET
 Model/MPN: HR850B4 (HR3-850-R2U)
 Type: Rechargeable battery
 Chemistry: Nickel-Metal Hydride (NiMH)
 Nominal voltage: 1.2 V
 Capacity: 850 mAh (nominal, model code HR3-850)
 Size: AAA (HR3 / LR03)
 Quantity in pack: 4 pcs
 EAN: 5908258327120
 Charge cycles: up to 1000 (no memory effect)
 Self-discharge: retains min. 70% capacity after 12 months
How to use
Install the batteries into the device matching the polarity markings. These ROCKET NiMH AAA cells are supplied precharged and can be used immediately. When recharging is required, place the batteries in a charger compatible with NiMH cells and follow the charger manufacturer’s instructions. Do not mix old and new batteries or batteries of different chemistries in the same device. For best results, allow the charger to complete its full charge cycle before removing the cells.
Usage recommendations
Store charged batteries in a cool, dry place and avoid prolonged exposure to high temperatures. For long-term storage, check charge state periodically and recharge when capacity drops below recommended levels. Use a charger designed for NiMH cells and observe safety instructions provided by the charger and device manufacturers.

## Specifications

### Battery

| Feature | Value |
|---|---|
| Battery type | Rechargeable battery |
| Battery size(s) | AAA |
| Battery technology | Nickel-Metal Hydride (NiMH) |
| Battery voltage | 1.2 V |
| Number of batteries included | 4 pc(s) |
| Battery capacity | 850 mAh |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Blister |

## FAQ

### How much does the Rechargeable battery ROCKET HR3-850-R2U cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 Thursday 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. 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 ROCKET 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 ROCKET 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 type, battery technology, battery voltage, number of batteries included, battery size(s), 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/2024985/64057621_large.webp