Open Battery Information (OBI) Makita 18V
Print Profile(1)
Bill of Materials
- Arduino Nano (USB-C) x 1: https://nl.aliexpress.com/item/32647196840.html
- Makita charger connector x 1: https://nl.aliexpress.com/item/1005005933529451.html
- Spade terminals x 1: https://nl.aliexpress.com/item/1005008490074071.html
- 4.7kΩ 0.25W resistors x 2: https://nl.aliexpress.com/item/1005003342360099.html
Description
This is my version of the OBI enclosure, where I focused on creating a more robust, durable 3D-printed design and housing. The enclosure is a fully new design, developed while taking into account the mechanical constraints and geometry of both the OBI electronics and the original Makita battery hardware. One of the main additions is the integration of the original Makita-style locking mechanism. This allows the OBI device to use the same locking clip system that is normally used to attach and release a battery. As a result, the unit can securely click into place, improving overall robustness, stability, and user ergonomics during use.
More information about the original OBI project by Martin Jansson can be found here:
Open Battery Information Project
Part guide:
- Arduino Nano (USB-C)
- Makita charger connector
- Spade terminals
- 4.7kΩ 0.25W resistors
Build guide:
https://keetsupport.nl/2026/06/02/open-battery-information-arduino-bouwen-voor-makita-accus/
Pre-build:
https://keetsupport.nl/product/open-battery-information-makita/
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
Comment & Rating (13)