Sleeves and spacers turn AA or AAA batteries into C- or D-cell

Sleeves and spacers reliably allow you to use AA or AAA batteries with C or D gadgets.

Panasonic Eneloop Power Pack - 4 Position Charger, 8 x Eneloop AA, 2 x Eneloop AAA, 2 x C Cell Spacers, 2 x D Cell Spacers (K-KJ17MCC82A)

How to Make C or D Batteries From AA Batteries - Use a Battery Adaptor - Simple and Easy - Tutorial

AAA to AA Battery Adapter Sleeve

How to Select a Power Supply for Your Project

Double nipple, M12 x 1.5 tapered x 1/4 cylindrical, brass - OEG Webshop

Adapting AAA and AA to C and D?

Battery Eliminator - AAA Battery Dummy Cell - fake battery circuit

Battery Eliminator - AAA Battery Dummy Cell - fake battery circuit

High Quality: They are made of high quality and durable plastic ABS, which provides long life of AA batteries. Economic Case - Save on C battery

C Size Battery Spacers for Sanyo Eneloop or Other AA Batteries, AA to C Size Battery Adapter C Battery Converter,6 Pack

EBL C and D Size Battery Adapters, AA to C and D Size Battery Spacer Converter Case Use with Rechargeable AA Battery Cells - Batteries Are Not

EBL AA to C and D Size Battery Spacer Converter Case

TACO 20 Carbon Fiber Twist Lock Outrigger Poles fGS450 GS500 GS1000 Bases Black OT4200CFHD –

Rechargable battery conversion kit for Maglite 2D Flashlights.

Pieces 3 x AA to 1 D Size Parallel Battery Holder Conversion Adapter Switch Converter Case

AA to C Adapter