# Rechargeable NiMH Battery Pack: 8.4 V, 2200 mAh, 4+3 AA Cells, JR Connector

**Type:** Product page · **SKU:** POLOLU-2226 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/rechargeable-nimh-battery-pack-8-4-v-2200-mah-4-3-aa-cells-jr-connector.html ([markdown](https://core-electronics.com.au/rechargeable-nimh-battery-pack-8-4-v-2200-mah-4-3-aa-cells-jr-connector.html.md))

This is a rechargeable 8.4 V NiMH battery pack with a capacity of 2200 mAh. The pack consists of seven AA cells in two rows and a 4" lead terminated by a “JR”-style connector.

## Pricing

- **Price:** $63.95 (inc GST) — $58.14 AUD, exc GST
- **Quantity discounts:** 6+ $55.81 (exc GST) · 12+ $54.06 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 14 and Aug 17.

## Description

**Connector**

| [![](https://core-electronics.com.au/attachments/localcontent/0J3212_652444cffb.jpg)](https://core-electronics.com.au/attachments/localcontent/0J3212_15851e4b157.jpg) |
|---|

This battery pack comes with 4" leads terminated by a 3-pin [JR-style female connector](https://core-electronics.com.au/jr-connector-pack-female.html) (only two of the pins are used). The connector is the same as what is found on the most [servos](https://core-electronics.com.au/category/23/rc-servos) and has a 0.1" spacing, so it fits nicely with [0.1" male headers](https://core-electronics.com.au/0-100-2-54-mm-breakaway-male-header-1x40-pin-straight.html) and can plug directly into most RC receivers, [servo extension cables](https://core-electronics.com.au/twisted-servo-extension-cable-12-male-female.html), and [servo switch harnesses](https://core-electronics.com.au/servo-switch-harness-18.html), and custom cables made with [JR male connectors](https://core-electronics.com.au/jr-connector-pack-male.html) or [Futaba J male connectors](https://core-electronics.com.au/futaba-j-connector-pack-male.html). Note, however, that this style of connector is often referred to as “male” in the RC hobby industry, so please use the picture on the right to clear up any potential confusion.

**Capacity Options**

Pololu's rechargeable NiMH battery packs give you variety of options for powering your robot or electronics project. The battery packs use 1.2 V cells and are available in several capacities:

| [![](https://core-electronics.com.au/attachments/localcontent/0J3232_161003509fc.jpg)](https://core-electronics.com.au/attachments/localcontent/0J3232_13798525d50.jpg) |
|---|

| Cell Type | Capacity (mAh) |
|---|---|
| AA | 2200 |
| AAA | 900 |
| 2/3 AAA | 350 |
| 1/3 AAA | 200 |

The picture to the right shows the relative sizes of Pololu's NiMH battery packs. These packs are well-suited for powering small robots, and the smaller (1/3- or 2/3-AAA) battery packs make great power sources for miniature robots, such as those that might be based on Pololu's [Baby Orangutan robot controller](https://core-electronics.com.au/baby-orangutan-b-328-robot-controller.html).

| \| [![](https://core-electronics.com.au/attachments/localcontent/0J3233_18289ad520e.jpg)](https://core-electronics.com.au/attachments/localcontent/0J3233_19816a12658.jpg) \| \|---\| \| The smaller, 1/3- and 2/3-AAA NiMH battery packs are great for miniature robots. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J3231_23679393495.jpg)](https://core-electronics.com.au/attachments/localcontent/0J3231_19694c07027.jpg) \| \|---\|---\| \| Assorted NiMH batteries and battery packs. \| |
|---|

Battery pack color may differ from what is shown in the main product picture.

**Note:** The battery voltages listed in the product descriptions are based on the 1.2 V nominal voltage of the NiMH cells from which the packs are made. The actual voltage will depend on how charged the batteries are. A fully charged NiMH cell will deliver almost 1.5 V, so, for example, a “6V”, 5-cell pack can measure over 7 volts after being charged, and it can fall well below 5 volts when the pack is drained. You will need to charge these battery packs before you first use them. The [iMAX-B6AC battery charger](https://core-electronics.com.au/imax-b6ac-v2-balance-charger-and-discharger.html) works well with these battery packs.

**People often buy this product together with:**

| [![iMAX B6AC V2 Balance Charger and Discharger](https://core-electronics.com.au/attachments/localcontent/0J6156_5430e7b926.jpg)](https://core-electronics.com.au/imax-b6ac-v2-balance-charger-and-discharger.html) | [iMAX B6AC V2 Balance Charger and Discharger](https://core-electronics.com.au/imax-b6ac-v2-balance-charger-and-discharger.html) |
|---|---|

**Dimensions**

 | Size: | 58 x 27 x 51 mm |
|---|---|
| Weight: | 6.9 oz |

**General specifications**

 | Voltage: | 8.4 V |
|---|---|
| Capacity: | 2200 mAh |
| Cells: | 7 |
| Cell type: | AA NiMH |
| Connector: | JR, 3-pin female |

**Recommended links**

- **[Understanding Battery Capacity](https://www.pololu.com/blog/2/understanding-battery-capacity-ah-is-not-a)**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/r/e/rechargeable_nimh_battery_pack_8.4_v_2200_mah_4_3_aa_cells_jr_connector__pololu_2226__00.jpg)