> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Rechargeable NiMH Battery Pack: 3.6 V, 900 mAh, 3x1 AAA Cells, JR Connector **Type:** Product page · **SKU:** POLOLU-2230 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/rechargeable-nimh-battery-pack-3-6-v-900-mah-3x1-aaa-cells-jr-connector.html ([markdown](https://core-electronics.com.au/rechargeable-nimh-battery-pack-3-6-v-900-mah-3x1-aaa-cells-jr-connector.html.md)) This is a rechargeable 3.6 V NiMH battery pack with a capacity of 900 mAh. The pack consists of three AAA cells in a single row and a 4" lead terminated by a “JR”-style connector. ## Pricing - **Price:** $20.50 (inc GST) — $18.64 AUD, exc GST - **Quantity discounts:** 10+ $17.89 (exc GST) · 25+ $17.34 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 1 today, and up to 120 more in 4–7 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-2230:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-2230:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## 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. **Dimensions** | Size: | 31 x 11 x 46 mm | |---|---| | Weight: | 1.35 oz | **General specifications** | Voltage: | 3.6 V | |---|---| | Capacity: | 900 mAh | | Cells: | 3 | | Cell type: | AAA 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_3.6_v_900_mah_3x1_aaa_cells_jr_connector__pololu_2230__00.jpg)