Eneloop Panasonic BQ-BS1E4SA D Size Battery Adapters for Use with Ni-MH Rechargeable AA Battery Cells, 4 Pack

eneloop "D" Size Spacers for use with eneloop AA battery cells. eneloop "C" and "D" size spacers allow for eneloop AA batteries to be inserted and utilized in "C" and "D" size battery applications. The battery cells maintain their original eneloop AA cell performance characteristics including 2000mAh typical (1900 minimum), up to 2100 recharges, and will hold 70% of their charge for up to 10 years, (when not in use). These adapters are a great alternative when "C" and "D" size batteries are not available. Battery life will vary based on the application.