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Battery Extra EX01 12-150

Battery Reconditioner, Battery Desulfator, Battery Rejuvenator Restore or Maintain Your Lead Acid Batteries in Top Condition


Battery Extra EX01 12-150

For 12 volt batteries up to 250 Ah

Main Applications: recovery and maintenance of 12 volt lead acid batteries

For batteries with higher capacity or voltage visit our product page and select the most suitable product,


The Battery Extra 12-150 electronic desulfator is designed to maintain or recondition all types of 12 volt Lead Acid batteries generally found in cars, light trucks, small RVs, caravans, motorhomes, boats and many other electric powered products. Suitable for 12 volt batteries up to 250 Ah. Offered with a 90 money back guarantee including the return postage cost and a 3 year warrantee.

It is EMC tested to European standards and so will not interfere with any other electronic devices you may have fitted. Its compact size makes it very simple to fit via ring connectors supplied with each unit. The Battery Extra battery desulfator is the only desulfator approved for sale on the Caravan and Camping Club website. With over 600,000 members and 1,600 UK sites it is largest caravan club in the UK

For larger capacity batteries (up to 3,000 Ah), higher voltages (up to 120 volts) and other applications like, off grid solar, fork trucks, mobility scooters, golf carts ect. Visit our products page.

Replacement batteries cost a lot of money and everybody knows that batteries wear out over time. What most people don't know is that more than 70% of lead acid batteries fail because of sulphate build up on the cells, not because they are worn out. Sulphate build up increases the internal resistance of the battery, reducing its capacity and leads to premature battery failure. Sulphated batteries can now be successfully recovered saving the cost of expensive replacements. You can also stop sulphate build up on new batteries which could double the life of your batteries; in effect this will reduce your battery costs by 50%. The main causes of sulphate build up on lead acid battery cells are: Batteries sitting too long between charges, storing batteries without charging, undercharging batteries, low electrolyte level and incorrect charging levels

The Battery Extra  was developed to fully clean both the negative and positive battery plates of all the sulphate crystal build up, without the need for the damaging high voltage spikes, and return them to a fully working condition. it will also eliminate sulphate build up on new batteries keeping them in top condition, ensuring they have the maximum possible life span. It works during both the charge and discharge phase of the battery cycle.

The Battery Extra can be permanently attached to any 12 volt lead acid battery or battery pack. It uses a small amount of power from the battery to extend the life of new batteries. It also revives many weak or old batteries that are thought to be dead or need replacing. Alternatively you can desulphate one bad battery or set, and then just move it on to the next battery.

The Battery Extra works by creating a wide range of low voltage frequency signals, that are designed to dissolve the sulphate crystals that builds up on both the negative and the positive plates of a lead acid battery. It is this sulphate build up that reduces the batteries capacity. Gently dissolving the sulphate crystals back into the electrolyte over several charge cycles, lowers the internal resistance of the battery, and raises the specific gravity, ensuring that you keep, or return, your batteries to their maximum capacity. It works  with no need for a special charger or any external power supply.

The Battery Extra will work on all types and brands of lead acid battery, including GEL, AGM, Maintenance Free, Deep Cycle, Sealed and Leisure. Whilst the Battery Extra is successful in recovering all sulphated batteries it will not recover batteries with damaged or dried out cells. 

Will it work?

On new or sulphated batteries it WILL work every time. The Battery Extra will not work with batteries that have damaged cells or sealed batteries that have dried out, it is not suitable for UPS batteries that are not cycled (charged discharged) but this is the best bit. We offer a 90 day 100% full refund of your payment if it does not revive your batteries, including the return postage cost. So you have nothing to loose and everything to gain. How well will it work? To be truly effective a desulfator need to combine a high power output with the ability to produce a wide range of frequencies.  It is 10 times more powerful than the cheap alternatives you will see advertised. If you see a desulfator built with plastic box, it cannot possibly be powerful enough to be effective.

The Battery Extra will work on all types and brands of lead acid battery, including GEL, AGM, Maintenance Free, Deep Cycle, Sealed and Leisure. Whilst the Battery Extra is successful in recovering all sulfated batteries it will not recover batteries with damaged or dried out cells. In addition to recovering sulfated batteries, by fitting the Battery Extra to your battery or battery bank you could double life of good batteries.


- Single voltage 12 volt
- Maximum battery size 250 Ah
- Maximum current draw 150 mA
- Battery voltage indictor
- No mains power required
- Works during both charge and discharge cycle
- Lightweight aluminum case
- Automatic low voltage cut off
- Low voltage override switch
- Short circuit protection built in
- EMC tested to EU standards
- CE compliance tested
- Works on all types of lead acid batteries
- Easy installation via ring connectors.

Noticeable results may be seen after the first use, but in most cases the full benefits of using the Battery Extra will take longer, which is why we offer a 90 day risk free trial. If within 90 days, you are not impressed with the results, we'll refund your money in full - no questions asked. Try the Battery Extra today.


"I have been using 2 of these units for the past 6 months. One is connected to my motorhome vehicle battery and the other connected to the leisure batteries (that are switched in turn for 24 hours each). Both units have been permanently connected while the vehicle is running and when parked and plugged into the mains supply. All three batteries are at least 3 years old and have been improved by the use of the units that are hard wired into the battery circuits." John H UK

"OK, results so far, we have tried to recover 7 car batteries from our scrap pile, 6 recovered good enough to use, 1 still dead." GP, London

"I bought this unit, as I had a lead acid battery on a tractor that is not used too much, but failed to start after charging the battery. It was either this or a new battery & with the 60 day guarantee it is defiantly worth a try. I used the unit with a battery charger, over a 7 day period. For other reasons, I then left the battery in the tractor for a month, then tried it, it started first time. Therefore, unquestionably it had a positive affect. After receiving the unit, I emailed their tech department with a couple of questions & within the day, got a very thorough response from someone who definitely knew their stuff." Gerry

"We tested with old car battery for very long time and we found the battery we saved looks similar as new battery with internal resistance, the result is good! Best regards" DR

For more customer comments visit our testimonials page.


When you buy a Battery Extra battery desulfator from us you are not just buying a product, you are buying into our technical expertise, you have the backing of engineers with many years of experience in the design and manufacture of batteries, and advanced battery management systems.

Besides the Battery Extra battery desulfator our technicians have designed and built battery management systems for hand held devices and many different electric vehicles including bikes, cars and motorcycles.

If you have any technical questions about the Battery Extra or just need advice or help with your batteries or battery pack, send us an email batteryextra@btconnect.com or phone. 

battery desulfator battery reconditioner

GBP £44.00

USD $64.00

Euro €54.00

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All orders are shipped from the United Kingdom.

We ship within one working day of your payment being received.


Our prices include free worldwide shipping by Royal Mail Priority Air Mail from the United Kingdom. A few countries are excluded from free shipping, we will contact you if this is the case.

UK orders will be sent by Royal Mail first class post.

We accept payment by all major credit cards or PayPal, via the secure PayPal system. You do not need to have a PayPal account to use this service.

We will also accept, from UK customers only, cheques (these will be cleared before shipping) or postal orders.

All Battery Extra products are offered with a 90 day money back guarantee and we will pay the return postage cost. Return postage refund is limited to the cost of return by the same method as we send. 1st. class postage in the UK and Standard Air Mail post from all other countries. Refund amount will be limited to Standard airmail postage cost.

Refunds will be paid within 48 hours of receipt of returned product, and will be refunded by the same method as your original payment.

Note: Depending on your country you may be liable for import duties and taxes.

Videos of the Battery Extra in use, posted by our customers on YouTube

Christopher, a customer of ours in Lagos, was brought an old 12 volt battery to try to recover, it was low on water and was recording only 4 volts, and he thought it would not be possible to recover but he gave it a try anyway. This is an edited video posted by him on YouTube showing the results after using the Battery Extra.

To see the full video and Christopher’s other videos CLICK HERE

Christopher is not connected in any way to Battery Extra Ltd. except as a customer. For full details on all of the Battery Extra models visit our products page.

For more Videos of the Battery Extra search YouTube using “battery extra desulfator”

Want more information before you order?.. Read our user manuals.



Unit M
Lammas Court
Lammas Road
NN17 5EZ
United Kingdom.

+44 20 8743 2267