BBC micro:bit Switched Battery Box 2 x AAA

BBC-micro-bit-Switched-Battery-Box-Upgrade-Rapid-18-2899-P-This-battery-box-upgrade-has-a-built-in-on-off-switch-and-has-the-same-connector-as-used-on-the-BBC-micro-bit-Using-this-box-makes-it-much-easier-to-switch-your-micro-bit-on-and-off-and-will-help-to-protect-the-fragile-connector-on-your-micro-bit-P-BBC-micro-bit-Switched-Battery-Box-2-x-AAA

Price: 1.45 from Rapid Online Rapid Electronics Ltd.