Pack of 4 Rechargeable Ni-MH Batteries 1/3 AAA 80 mAh 1.2 V for Solar Products: Amazon.co.uk: Electronics & Photo
ULTRALAST ULNMH413AAASL 1/3AAA Solar Rechargeable Battery - NIMH 1.2V 150mAh, Replacement Small Batteries for Outdoor Garden Solar Light Fixtures - Recharge Up to 1000 Times, No Leak Design - 4-Pack: Amazon.co.uk: Electronics