7.5V Li-Ion Batteries

The 7.5V Li-Ion Battery is the most widely used type of battery found on mountain bike lights.

The only difference is the capacity - the higher the capacity the longer the 'light' time.  

But please be aware that most imported cheapily available lights will not actually quote the real capacity and could be very over rated. Typical a four cell battery (approx 40x40x70mm) will be 4.4Ah.


Each Lithium-Ion battery supplied from mtbbatteries contains a protection circuit that protects against:

Over Charge, Under Discharge, Over Current & Short-Circuit. There is also a resettable fuse fitted inside each cell.


Each battery is supplied at approximately 50% state of charge. This is the best condition for storage. Although the battery can be used straight away we would suggest that the battery is fully charged before use using an appropriate Li-Ion Charger which is also available if required.


** Lately there has been some confusion amongst wrongly labelled batteries supplied with some lights. Batteries labelled as 8.4V are incorrectly labelled, This is the full charge Voltage of the battery and should read 7.5V - They are both the same battery **


- Only genuine Panasonic, LG or Sanyo cells are used in these Li-Ion Batteries

- Connectors

mtbbatteries carry a range of connectors that are compatible with a wide range of available lights.

No other connector or lead should be required so you can use one of our batteries directly with your current light and charger.

Most of these can also be supplied to a customers specific length, so if you would like to order with a slightly longer or shorter lead please feel to email before placing your order.

If we are unable to find a suitable connector there is always the option to send the original battery to us so we can use the original lead.


* Hope HLSP305 2013 Extensions cables are used for Hope Compatible batteries, please check to make sure these will fit your Light before purchasing * - These may not fit very early model lights which have a more solid moulding,


As these batteries will not always be used in perfect dry conditions each battery is firstly double sleeved in a PVC heatshrink and then put within its own neoprene weatherproof cover. 

Each battery also comes within its own battery bag that has two velcro fasteners for securing to bike.
Bottle type is also avalable on request

Ordering -

Due to the recent changes in the transportation of hazardous goods Li-Ion Batteries are shipped out via Interlink. This also makes it easier with the tracking of orders and you will now get an interactive service being able to track the progress of your item on an interactive map. 


You will be given a one hour delivery window being notified via text or email. If this is not convenient you can use the text or email to change the delivery date, or choose to ‘deliver to a neighbour’


Please email first with your enquiry if you are NOT within the UK as it may not be possible to complete your order.


** Please note extra shipping charges may apply to deliveries not on the UK Mainland **

Scottish Highlands & Islands - Please email first with your requirement.


7.5V 6.8Ah Li-Ion £49 + Shipping

Connector Type

Larger capacity batteries are also available to order if required.


If you are unsure of which battery to order or have a general question to ask, please feel to email and we gladly help out best we cansales@mtbbatteries.co.uk


Warranty is up to three months from purchase but please read storage information as regards Li-Ion Batteries when not in use - Storage information

Contact details

mtb batteries

Lichfield Business Village

The Friary

Lichfield WS13 6QG


Tel: 07895038777



View by appointment only


Email: info@mtbbatteries.co.uk


You can also use our contact form.

Trevor S Sep 20
Just got my Lezyne 1500xxl back from Mark at MTB and it’s Brilliant! Better than original and the service and price was 1st rate.
If your light is running out quick and taking an age to charge it’s likely it needs new batteries.
Give this company a try.
5 stars all the way
Ben C Oct 20
Just received my luminator 18 mtb batteries light this time for my handle bars , this combined with the 800 on my helmet is a fantastic light combination .
Can't rate these lights highly enough for price and operation
Stephen B Oct 20
Fantastic product. Ordered online, arrived within days. Great out on the trail and found it to be brighter than my mates lights which were twice as expensive - Luminator 18 bundle.
Sarah T Oct 20
Love my lumen 800, it arrived really soon after ordering. Small, light and great quality. Fits neatly on my helmet and it's my trusty partner on solo nighttime adventures.
Chris N Nov 20
Great service from Mark, got a moon battery re-cell’d that wasn’t holding a long charge. Also ordered the lumen 800 to run alongside my lumenator 18. Very reasonable prices and fast turnaround.
Owen M Dec 19

Got the Lumenator 18 this week. great light and actually as powerful as described which is such a nice change from all the cheapo lights ive had before. Nicely made, thanks.


Andy S Nov 19

Great service, great help with my request his knowledge is exceptional,
Went well and above to get the battery to me,


Mick W Oct 19

A great service and communication from mtb batteries who went way beyond the norm to sort my faulty Magicshine lamp/battery.


Steve M Sep 19

Great service, excellent products - a great company



Carl M Sep 19

Brought a lumenator-18 and a lumen 800 i tried them yesterday and really happy with how bright they are. Service was excellent and really helpful in telling me what combo would work for me. Would definitely recommend and use again. Thank you

The New Lumenator17

4/5 MBUK OCT 16

The new LUMEN2200

 4/5  WMB OCT 14



Excellent review and video from Campbell Coaching

Excellent MBUK review

The Lumenator

Its arrived

The V2 bike light


1000 Lumens


£89 inc p&p


Li-Ion Chargers

Now available up to 5A Charge rate


"Great lights came in 4th on the Snowdownhill Gersau 2012, Rigi - Switzerland Team NANDROLON 2RADTUNING says Thank You!!!"


"I bought a set of your lights last week. I used them on a solo non stop ride of the West Highland Way starting on Friday night and they were great. Even on low they were fine for cruising along, so I was easily able to manage the 9 hours of night riding without the battery getting near low. On full power the performance is fantastic, the balance between beam and peripheral seems right to me. It also rained almost non stop and the lights weren't affected at all. The quality of the construction, cables and sealing all look really good and it definitely stood up to the test. Great product at a bargain price.
Best regards,
Tom D"


"Another good service experience here, ordered Tuesday 0950, in my hands at 1030 this morning; well done to both Mr Smudge and Royal Mail! "


"I ordered a V2 XML light off Smudge on sunday and received it today tuesday bloody hell that was quick and he also told me via facebook it was on its way

All the praise heaped on Smudge is well deserved"


“Having 4 friends with your V1 XML light, I finally gave in to the need for more light and was fortunate enough to time it just right with the V2 coming out.
My 'V2' XML Light arrived this morning. Super fast delivery - thanks!
I thought my old light was good but this is an amazing amount of light for the money and seems to be well built and very robust.

Thanks for the great service.


"I really appreciate the stellar customer service. That's really hard to come by these days. I tell everyone I know about those lights, as I think they're absolutely brilliant!"

Cheers, Andy


"Battery arrived the other day and is great. In fact great service and advice throughout, you are definitely my battery source of choice from now on.".

Regards, David



"Have received the DX Battery this morning thank you very much. This is my second order from you and on both occasions you provided a very fast and reliable service.
Much appreciated. Colin, Swindon"


"Thanks mtbbatteries....it arrived today.....have charged the XML Bikelight  battery ready for tonight...great service......hopefully I will get another light for the helmet

Cheers, Pete, Clydach"


"Dear Mark, I appreciate the swift reply. I've just paid via PayPal for the battery. Thanks for your help, Steve"


"Battery received this morning thank you, Thanks for another efficient service.

Regards, Nigel"