> **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

# 3 Cell 18650 BMS Module

**Type:** Product page · **SKU:** CE09207 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/3-cell-18650-bms-module.html ([markdown](https://core-electronics.com.au/3-cell-18650-bms-module.html.md))

Make your own 18650 Battery banks with this 3-Cell BMS module

> ⚠ Soldering to a LiPo is an advanced skill - consider using [a holder](https://core-electronics.com.au/power-batteries/battery-holders.html) instead of soldering/spot welding to batteries

## Pricing

- **Price:** $2.10 (inc GST) — $1.91 AUD, exc GST
- **Quantity discounts:** 5+ $1.87 (exc GST) · 15+ $1.82 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 70 today; more stock is typically available with a 8–12 day lead time.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09207:1` (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/CE09207:1.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

Connect 3 18650 cells together to create your own battery packs! Simply connect it to a charger momentarily to wake up the BMS.

Check out [this forum discussion](https://forum.core-electronics.com.au/t/14632) for an interesting dive into these BMS modules!

### Connection Diagram

![18650 battery connection](https://core-electronics.com.au/media/wysiwyg/product_images/18650-bms-connection-diagram.jpg)

### Features

- Allows for 3 18650 cells to be combined in series
- Nominal voltage: 11.1 V
- In-built over-charge, over-discharge, short circuit, and over-current protection
- Charge and discharge the battery pack through the P+ and P- pads
- Charge using a regulated 12.6V supply (A constant current, constant voltage supply is highly recommended)
- Small footprint at - ~ 50 x 16 x 1 mm
 
### Specifications

- Maximum continuous discharge current: 5 - 8 A
- Peak discharge: 10 A
- Over-charge Voltage Range: 4.25~4.35 V ± 0.05 V (Per 18650 cell, charger dependent)
- Over-discharge Voltage Range: 2.3-3.0v±0.05v (We advise to also include a shutoff circuit to limit discharge)
- Internal resistance: ＜ 100mΩ
- Working Temperature: -40 ~ +50 °C

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE09207-1.jpg)