Cells are a plastic adapter with dummy core. Cores can also be removed and AA cells can be installed.These are Dummy cell or adapter only NO batteries of any kind are included. Great for use with Maglite C and D cell.
eBay
AA Battery Holder 6V For 4 x AA Battery Back To Back Holder Case Box Storage With Wire Leads For 4 * AA Batteries Battery case
Aliexpress UK
Application: Tile wall tile. Suitable tile: 30cm-120cm. tile can be instantly glued flat. 1 x Tile Tiling Machine. Vibration frequency:10-150hz/s. Super adsorption capacity: 75kg super strong adsorption capacity, easy to paste tiles.
eBay
Powerlion C Size Battery Adapters, AA to C Size Battery Spacer Converter Case Use with AA Battery Cells - 4 Pack
Aliexpress UK
Convert any size AA battery to a size C battery. 10PCS AA to C Size Battery Adapter Case. 10 x Battery Adapter Case.
eBay
3800mAh AA 1.2V Battery Ni-MH Rechargeable Battery for Toy Remote Control Rechargeable Batteries AA 1.2v 3800mah Battery
Aliexpress UK
Economic Case - Save on C battery costs, this small adapter allows you to use AA batteries in any device that requires a regular C-type battery. Easy to Use: Simply and easily provide a "C size body" for AA batteries, Put the battery in it to be used with any C size battery.
eBay
New Li-ion AAA and AA Rechargeable Batteries USB Lithium-ion 13600mAh 1.5V AA Rechargeable Batteries+6800mAh 1.5V AAA Battery
Aliexpress UK
Quantity: 1 set(4pcs). Battery holder converter: Switch size AAA battery to AA battery. 4 pcs x AAA To AA Battery Converter(other accessories demo in the picture is not included.). These battery converter is convenient, reduce weight and save money for you.
eBay
PALO 1.2V AA +AAA Rechargeable Battery 3000mAh AA LR6 Batteries 1100mAh LR3 AAA Battery+8 Slots 1.2 V AA AAA Battery Charger
Aliexpress UK
Quantity: 1 set(4pcs). Battery holder converter: Switch size AAA battery to AA battery. 4 pcs x AAA To AA Battery Converter(other accessories demo in the picture is not included.). These battery converter is convenient, reduce weight and save money for you.
eBay
JJC 8 Slots AA Battery Case Water-Resistant Shockproof Battery Storage Case for 8 x AA 14500 Battery AA Battery Organizer Case
Aliexpress UK
Motobatt Premium Battery for Honda GL 1500 SE GOLDWING 1991-2000 MBTX24U AGM.
eBay
AA Battery 1.5V Li-ion AA Rechargeable Battery 3400mAh AA Lithium-ion Battery for remote control mouse small fan Electric toy
Aliexpress UK
Convert any size AA battery to a size C battery. 10PCS AA to C Size Battery Adapter Case. 10 x Battery Adapter Case.
eBay
AA Battery 1.5V Li-ion AA Rechargeable Battery 9800mWh AA Lithium-ion Battery for remote control mouse small fan Electric toy
Aliexpress UK