4x Amazon Basics 9V Low Drain Alkaline Batteries. I can do any quantity up to 20 - add £1 each battery after the first 4.
Amazon Basics Battery Charger for Rechargeable AA and AAA NiMh Batteries – UK Plug, 4-Bay, Black
Amazon Basics Intelligent Digital Battery Charger for 4 AA, AAA, Black
Amazon Basics 4-Pack 9V Alkaline Batteries, 9V/6LR61, 5-Year Shelf Life - for Smoke/CO Detector, Electronics & Audio
Amazon Basics 40-Pack AA Alkaline Industrial Batteries, 1.5 Volt, 5-Year Shelf Life
Amazon Basics 12-Pack C Cell All-Purpose Alkaline Batteries, 1.5 Volt, 5-Year Shelf Life
Amazon Basics 4-Pack, Rechargeable C Cell NiMH Batteries, 5000maAh, Recharge up to 1000x Times , Pre-Charged
