10PCS AAA to AA Battery Adapter Converter AAA to AA Battery Holder Transparent Cases AAA to AA Adapter with Metal Contacts on Bottom for Battery Converter AAA to AA

This convent the AAA battery to AA battery, replacing the AAA to AAbattery adapter converter case.

Made of durable ABS,metal bottoms and tips for a solid electrical connection, this battery adapter shell won't warp or bend as a result of the springs putting pressure on it when you insert into your device. The inner of the adapter fits one AAA battery precisely so that it won’t move around or loose after inserted

AAA battery can be converted to AA battery by the AAA to AA battery adapter, they play the functions on saving energy

As it can also be used for other electronics in case you're running short on AA batteries, this battery conventor is perfect for emergency situations.Also,with this battery converter,you may not need to buy too much AAs or carry too much while travelling.

Just simply pull apart the case to separate,place AAA battery inside matching the poles correctly,and then push together to close.A regular AA size battery is converted easily and solidly