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18650 Rechargeable Batteries

Buy reliable and long-lasting 18650 rechargeable batteries from OnBuy that can be powered up hundreds of times and still keep demanding devices running. Shop our 18650 rechargeable battery range and get free UK delivery on many packs and chargers, along with low prices from OnBuy's verified sellers!

Showing 1-60 of 420 results

2x 18650 lithium battery 2600mah capacity 3.7V rechargeable battery

(31) £6.49 PopularFree Delivery

4Pcs Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898

(70) £6.10 PopularFree Delivery

2 x REPLACEMENT 18650 2000mAh 3.7V RECHARGEABLE BATTERY NO Pointed

(12) £5.49 PopularFree Delivery

4Pcs Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898 FREE UK POST UK SELLER

(1) £6.99 PopularFast & Free Delivery

8Pcs Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries BC897

(30) £11.74 PopularFree Delivery

2 x REPLACEMENT 18650 1200mAh 3.7V RECHARGEABLE BATTERY Pointed

(9) £6.99 PopularFree Delivery

Multiple Options Available (4redbatr) Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898 FREE UK POST UK SELLER From £6.99 PopularFast & Free Delivery

2 x REPLACEMENT 18650 1200mAh 3.7V RECHARGEABLE BATTERY NO Pointed

(4) £4.59 PopularFast & Free Delivery

4Pcs Rechargeable 4200mAh 18650 Batteries for Electric Toys Garden Lights BC985

(3) £6.36 PopularFree Delivery

2 x REPLACEMENT 18650 1500mAh 3.7V RECHARGEABLE BATTERY NO Pointed

(5) £4.79 Fast & Free Delivery

Multiple Options Available (2redbatr) Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898 FREE UK POST UK SELLER From £4.99 PopularFast & Free Delivery

Multiple Options Available (1redbatr) Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898 FREE UK POST UK SELLER

(1) From £3.99 PopularFast & Free Delivery

4PCS 18650 Rechargeable Li-ion Battery 3.7V 2600mAh Lithium Cells Flat Top

(12) £9.79 PopularFree Delivery

4x 3.7V 2200mAh 18650 Rechargeable Li-ion Battery Flat Top for Flashlight

(8) £7.49 PopularFast & Free Delivery

4pcs 3.7V 18650 Li-ion Rechargeable Battery 4800mAh Red for Flashlight

(3) £6.38 Free Delivery

Sponsored 4x 3.7V 2200mAh 18650 Rechargeable Li-ion Battery Flat Top for Flashlight

(8) £7.49 PopularFast & Free Delivery

Multiple Options AvailableSponsored (Flat) 2X Rechargeable 18650 Battery 2200mAh 3.7V Li-ion Batteries

(5) From £5.89 Free Delivery

Multiple Options AvailableSponsored (4pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(1) From £7.99 Fast & Free Delivery

Sponsored 2PCS 18650 Rechargeable Li-ion Battery 3.7V 2600mAh Lithium Cells Flat Top BC875

(2) £6.49 Free Delivery

Sponsored 2 x REPLACEMENT 18650 2600mAh 3.7V RECHARGEABLE BATTERY No Pointed

(2) £6.49 PopularFree Delivery

Multiple Options Available (3redbatr) Genuine 18650 3.7V 6800mAh Rechargeable Li-ion Battery Batteries BC898 FREE UK POST UK SELLER

(2) From £5.99 PopularFast & Free Delivery

Multiple Options Available (Flat) 2X Rechargeable 18650 Battery 2200mAh 3.7V Li-ion Batteries

(5) From £5.89 Free Delivery

Multiple Options Available (4pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(1) From £7.99 Fast & Free Delivery

Multiple Options Available (2pcs) Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries

(11) From £6.35 PopularFree Delivery

2PCS 18650 Rechargeable Li-ion Battery 3.7V 2600mAh Lithium Cells Flat Top BC875

(2) £6.49 Free Delivery

2 x REPLACEMENT 18650 2600mAh 3.7V RECHARGEABLE BATTERY No Pointed

(2) £6.49 PopularFree Delivery

Panasonic NCR18650B 3400mAh 3.7V Li-Ion Rechargeable Unprotected Battery

(2) £8.34 Free Delivery

2X 18650 4000mAh power battery 3.7v rechargeable Li-on battery

(7) £7.97 Free Delivery

4 x REPLACEMENT 18650 1500mAh 3.7V RECHARGEABLE BATTERY NO Pointed £6.58 PopularFast & Free Delivery

Multiple Options Available (2 PCS 1800 MAH) 18650 3.7V Rechargeable Lithium Battery With Case

(1) From £4.59 PopularFast & Free Delivery

2X 18650 9900mAh power battery 3.7v rechargeable Li-on battery

(3) £8.99 PopularFast & Free Delivery

Multiple Options Available (2pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(1) From £5.49 Free Delivery

2 x REPLACEMENT 18650 1500mAh 3.7V HIGH DRAIN RECHARGEABLE BATTERY

(1) £4.79 PopularFree Delivery

Multiple Options Available (4 Pack) Genuine UltraFire 18650 9800mAh power battery 3.7v rechargeable Li-on battery

(3) From £21.96 Free Delivery

18650 Li-ion Rechargeable Battery 3000mAh

(1) £11.99 PopularFree Delivery

2 x Genuine LG HG2 INR 18650 LGDBHG21865 3000mAh 3.7V 20A / 30A

(5) £12.99 Free Delivery

Ampsplus 18650 3500mAh 3.7V Li-ion 10A Flat Rechargeable Battery £8.99 Fast & Free Delivery

2 x REPLACEMENT 18650 2200mAh 3.7V RECHARGEABLE BATTERY Pointed

(3) £9.88 Free Delivery

2X 18650 2600mAh power battery 3.7v rechargeable Li-on battery

(14) £11.98 Free Delivery

2pk Samsung 30Q 18650 Rechargeable Battery

(98) £7.99 Fast & Free Delivery

Multiple Options Available (6pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top From £10.49 Free Delivery

(2 Pcs Batteries) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

Multiple Options Available (2 Pcs Batteries) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

(5) From £6.99 Fast & Free Delivery

Multiple Options Available (3pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(2) From £6.88 PopularFast & Free Delivery

2X BRC 18650 4800mAh power battery 3.7v rechargeable Li-on battery

(31) £5.99 PopularFast & Free Delivery

2X 18650 9800mAh power battery 3.7v rechargeable Li-on battery

(20) £10.77 Fast & Free Delivery

(3 Pcs Batteries) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

Multiple Options Available (3 Pcs Batteries) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

(7) From £6.86 Fast & Free Delivery

4pcs 3.7v 18650 9800mah Li-ion Rechargeable Battery For Flashlight Torch

(2) £9.99 Fast & Free Delivery

Multiple Options Available (2 Pack) Genuine UltraFire 18650 9800mAh power battery 3.7v rechargeable Li-on battery

(5) From £8.18 PopularFree Delivery

2PCS 18650 Rechargeable Li-ion Battery 3.7V 2600mAh Lithium Cells Flat Top BC875 £6.69 Free Delivery

(4 Pack) +SJ18650 Battery 6000mAh 3.7V 18650 Rechargeable Battery Li-ion Lithium Battery for LED Flashlight Torch Lithium Battery

Multiple Options Available (4 Pack) +SJ18650 Battery 6000mAh 3.7V 18650 Rechargeable Battery Li-ion Lithium Battery for LED Flashlight Torch Lithium Battery

(1) From £8.99 Fast & Free Delivery

4pcs 18650 Rechargeable Battery 3.7V 2600mAh Blue for Flashlight Headlamp BC885

(5) £6.49 Free Delivery

2 x REPLACEMENT 18650 1800mAh 3.7V RECHARGEABLE BATTERY Pointed £9.88 Free Delivery

2PCS 18650 Rechargeable Li-ion Battery 3.7V 2200mAh Lithium Cells Flat Top BC874

(3) £5.79 PopularFree Delivery

Multiple Options Available (2 PCS 2200 MAH) 18650 3.7V Rechargeable Lithium Battery With Case From £5.49 PopularFree Delivery

Multiple Options Available (12pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(1) From £17.99 Free Delivery

(1 Pc Battery) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

Multiple Options Available (1 Pc Battery) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

(9) From £3.99 PopularFast & Free Delivery

Golisi S30 18650 3000mAh 3.7V Li-Ion 25A Vape Rechargeable Battery

(2) £7.99 PopularFree Delivery

12x BRC 18650 6800mAh 3.7V Rechargeable Li-ion Battery Large Capacity Red

(3) £12.68 Free Delivery

(2 Pack) +SJ18650 Battery 6000mAh 3.7V 18650 Rechargeable Battery Li-ion Lithium Battery for LED Flashlight Torch Lithium Battery

Multiple Options Available (2 Pack) +SJ18650 Battery 6000mAh 3.7V 18650 Rechargeable Battery Li-ion Lithium Battery for LED Flashlight Torch Lithium Battery

(2) From £7.99 Fast & Free Delivery

Multiple Options Available (4pcs) Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries

(12) From £9.42 PopularFree Delivery

Vapcell K30 Rechargeable Battery Cell 18650| Vape Battery £6.95 Free Delivery

8x 3.7V 2200mAh 18650 Rechargeable Li-ion Battery Flat Top for Flashlight £14.19 Free Delivery

Multiple Options Available (2 PCS 2000 MAH) 18650 3.7V Rechargeable Lithium Battery With Case From £6.99 Free Delivery

GTF 1pc 18650 Battery 3.7V 5000mAh Capacity Li-ion Rechargeable Batter

(1) £4.03 Free Delivery

2 x REPLACEMENT 18650 2000mAh 3.7V RECHARGEABLE BATTERY Pointed

(1) £9.88 Free Delivery

Sponsored Panasonic NCR18650B 3400mAh 3.7V Li-Ion Rechargeable Unprotected Battery

(2) £8.34 Free Delivery

Sponsored 4 x REPLACEMENT 18650 1500mAh 3.7V RECHARGEABLE BATTERY NO Pointed £6.58 PopularFast & Free Delivery

Multiple Options AvailableSponsored (2 PCS 1800 MAH) 18650 3.7V Rechargeable Lithium Battery With Case

(1) From £4.59 PopularFast & Free Delivery

Sponsored 2X 18650 9900mAh power battery 3.7v rechargeable Li-on battery

(3) £8.99 PopularFast & Free Delivery

Multiple Options AvailableSponsored (2pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

(1) From £5.49 Free Delivery

Our highest rated 18650 rechargeable batteries

Genuine Efest 2500mAh IMR 18650 BATTERY - 35AMP BATTERY - FLAT TOP

I purchased these batteries after the original ones in my e cigarette stopped holding charge. The original ones were purchased from Amazon, but they were out of stock. After a quick search I discovere...

4PCS 18650 Rechargeable Li-ion Battery 3.7V 2600mAh Lithium Cells Flat Top

Good batteries and cheaper than everywhere I like them but I wished I could get them sooner on delivery cuz it came a bit late. Good I would prefer them in better packed cu delivery drop them from my...

(2pcs) Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries

Batteries very hard to find.Given on/buy address who had them and dispatched them to me.right away .only problem was the delivery time which took nearly three weeks. Still good service as they were ha...

(12pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

Work every bit as well as other ones I’ve bought at four times the price. Not sure how long they will last but the more expensive ones didn’t last more than three months so it really doesn’t mat...

4pcs 3.7V 18650 Li-ion Rechargeable Battery 4800mAh Red for Flashlight

Great product at a great price. Looked all over for these and OnBuy.com were the cheapest, with a detailed description so that I knew I was ordering exactly what I needed. Delivery was quicker than ex...

4x 3.7V 2200mAh 18650 Rechargeable Li-ion Battery Flat Top for Flashlight

We are using these in solar powered lights on our drive and they have proved very good indeed. Arrived fully charged and despite the weather being quite gloomy have recharged, and held the charge, ver...

12x BRC 18650 6800mAh 3.7V Rechargeable Li-ion Battery Large Capacity Red

The batteries were delivered most speedily and were mostly fully charged, the few remaining were nearly fully charged. This meant they hold their charge well. They were a very good price. They are to...

2 x REPLACEMENT 18650 2000mAh 3.7V RECHARGEABLE BATTERY NO Pointed

Very happy with my product This is my 2nd order. The website was clear and precise. I was very impressed Overall great experience and would recommend using this company to others.Thank you Was t...

(3 Pcs Batteries) 18650 Model Ultro High Drain 20A Flat Raise Head Top 3.7V Li-ion Battery 6800mAh Torch Doorbell Lamp Toys Game Button Top Batteries

I would recommend these batteries to anyone great price.I put them in a video doorbell and they are perfect always look before you buy as some are not up to the job.I am more than happy with these bat...

18650 Li-ion 5000mah 3.7v Rechargeable Battery For Led Torch Flashlight

Thought when I was ordering due to the description it was 1 battery lol so was well pleased to find there was 4 in the pack. Excellent price for 4 batteries that charged in no time & worked as they sh...

(4pcs) 18650 Rechargeable Li-ion Battery 3.7V 2000mAh Lithium Cells Flat Top

Product was dispatched within time and the arrival date was completed as expected. The batteries were not great quality and as expected for purpose but the sellers support was highly admirable and a r...

2 x REPLACEMENT 18650 1500mAh 3.7V RECHARGEABLE BATTERY NO Pointed

I am happy with the replacement rechargeable batteries there are perfect fit for my outside security light which nows as it should. The battles are now installed in the light therefore I can't take a...

(6pcs) Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries

Bought these to replace cells in a Gtech Multi, perfect fit, no messing, delighted. Price was great, highly recommended. The size was exactly as described. Definately give them a try, you will not be...

(6 Pack) INR1865 Samsung 25R 18650 20A 2500mAh High Drain Batteries

Very happy with my purchase of the batteries and they keep their charge for a good 16 hours, they are also a good size to fit comfortably in your pocket encase you need to change the battery during a...

(3pcs) Genuine 18650 3.7V 5000mAh Rechargeable Li-ion Battery Batteries

Finally I mange to find the right batteries very good service very fast delivery. Item as described batteries charged and work well with the door bell No issues at all overall excellent service

Looking to buy 18650 Rechargeable Batteries?

Fed up with batteries that seem to run out quicker every time you charge them, or spending a fortune on single-use ones? Shop reliable, durable, and long-lasting 18650 rechargeable batteries for your demanding devices now with OnBuy.

Find affordable prices within our 18650 rechargeable battery range and get a single battery, duo packs, four packs, and more. You can also buy packs with chargers, or get household battery chargers on their own to ensure you can always top up.

What is a 18650 battery?

An 18650 battery could easily be mistaken for more common AA batteries that you find in lots of everyday items, like remote controls and other small electronic devices, but they're quite different. Visually, they're slightly larger (the 18650 name comes from its 18x65mm measurements) so they won't fit into AA battery slots, but also they deliver charge differently.

The 18650 battery is designed to support devices that have a high power consumption, like laptops, electronics, and even some electric cars. To do that, they have to be reliable, have a long run time, and be capable of being recharged hundreds of times without suffering a loss in capacity or charge delivery.

How to charge a 18650 battery?

Charging 18650 rechargeable batteries is simple - all you need is a compatible battery charger. Ensure a 18650 battery will fit in the charger before you buy, but then you just need to pop it into the charger and plug in. If you're going to be using the charger regularly, it would be worth looking for features like overcharge, over-current, over-voltage prevention to stop the battery from getting damaged over it's working lifetime.