Information
Which battery fits your device?
A practical cross-reference of the battery sizes we sell and the flashlights, torches and lamps that use them. Find your device below, then pick the matching size.
Battery sizes and what uses them
45 products matched across 7 battery sizes.
18650
23 products21700
11 products26650
3 productsCR123A
3 productsAA
2 productsAAA
2 productsD
1 productBefore you buy
Always check the product page of your torch before buying a battery. Some torches need a protected button-top cell and others need a flat-top cell, and the two are not interchangeable. If you are not sure, send us the model on WhatsApp and we will confirm the right battery for you.
Two cells that share a size are not always the same part. Protected cells carry a small circuit board and are therefore slightly longer than unprotected ones, which matters if your torch has a tight battery tube. Check the product page first, and ask us if it is not clear.
Charging
- Use a charger made for that cell size. A charger built for 18650 cells is not meant for AA or AAA cells, and the reverse is also true.
- Take the cells out of the torch before charging, unless the torch is designed to charge them inside.
- Do not leave charging cells unattended, and unplug the charger once it shows the cells are full.
- If a cell or the charger gets too hot to hold comfortably, stop charging and let everything cool down.
- Do not charge a cell that has a damaged wrapper, or a body that is dented or swollen.
Safety
Lithium cells are safe when they are treated properly. Almost every problem we see comes from one of the mistakes below.
Never carry loose cells with metal. Keys, coins and other loose metal in the same pocket or bag can bridge the terminals and short-circuit a cell. Keep loose cells in a plastic case or a dedicated holder.
- Do not use a cell with a torn wrapper, a dented body or a swollen body. Retire it.
- Do not mix old and new cells, or cells of different brands or capacities, in the same device.
- Keep cells away from heat, open flame and direct sun, and out of reach of children.
- Fit the cell type the product page specifies. If a torch needs a protected cell, use a protected cell.
Storage
- Store cells at room temperature, somewhere dry and away from direct sun.
- Keep loose cells in a case so the terminals cannot touch metal.
- If a lithium cell will sit unused for months, charge it to roughly half before storing, then top it up before you use it again.
- Remove cells from a torch you are putting away for a long time, so they cannot leak or discharge inside the body.
Common mistakes
Buying the wrong top
A flat-top cell will not make contact in a torch built for a button-top cell, and a protected cell may be too long for a tight tube.
Assuming every cell of a size is equal
Two 18650 cells can differ in capacity and in how much current they can deliver. Match the cell to the device, not just to the size.
Using the wrong charger
A charger must match the cell size it was designed for. Charging a smaller cell in a larger bay, or the reverse, is not safe.
Keeping a damaged cell
A torn wrapper, a dent or a swollen body means the cell is finished. Replace it rather than taping it up.
Not sure which battery you need?
Send us the model of your torch or device and we will tell you exactly which cell to buy.