DC-DC battery chargers

“Intelligent” battery chargers are great when you have access to mains hook-up but how do you keep your batteries properly charged when on the move?

Most motorhomes, boats and other vehicle with living accommodation use a simple split-charge relay or something similar. But, these operate just like an old-fashioned battery charger, measuring voltage alone and with no reference to what the leisure batteries actually need to perform at their best.
The answer: install a battery-to-battery charger, a remarkable device which - when the vehicle’s engine is running - constantly monitors both starter and auxiliary batteries.

It then takes spare energy (supplied by the alternator) from the starter battery and uses it to charge the auxiliary battery or batteries in the same way that a 230V “intelligent” charger would. This not only ensures that batteries are as fully charged as possible but also prolongs their working life.

We have a choice of models from different manufacturers to enable you to get exactly the right one for your vehicle or boat.

Recent Reviews

Power Service Gold 40-M Charger

Quality

Value

Ease of Use

I use two Banner 100Ah batteries linked to a Power Service Gold 40 and a 150W solar panel. This tops the leisure batteries up at up to 40A when driving and also manages the solar panel’s output when pitched up. In practice I find this set-up makes you far less reliant on electric hook-ups. For an overnight or a weekend away, I tend not to bother with a hook-up and put the saved money towards a pint!

Peter Rosenthal, MMM Technical Editor

By Received via email .
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Votronic 3326 Battery-to-battery charger VCC 1212-50

Quality

Value

Ease of Use

Top quality equipment, not cheap but you can definitely see the quality. Recently fitted this b2b charger alongside the battery and solar computers. Clear and precise instructions in English so easy to fit. Recommended.

By Charles Thompson
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CTEK "OFF GRID" Battery to Battery Charging System 20A

Quality

Value

Ease of Use

working brilliantly, easy installation. matches all the feedback given online

By Received via email .
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CTEK "OFF GRID" Battery to Battery Charging System 20A

Quality

Value

Ease of Use

The CTEK works perfectly on the Defender 110 managing off grid power from the solar panel and engine. Use this link to see how we are using the CTEK: https://lavieonroad.net/our-home-3/#a-change-of-direction

By Received via email .
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Power Service Gold 40-M Charger

Quality

Value

Ease of Use

When planning to convert my Fiat Ducato into a campervan, I was looking for the simplest way to handle multiple power sources, if possible with a single unit. The Power Service Gold does exactly that, and brilliantly. I have added the control unit to monitor the charging, consumption and batteries' charge level, but it is not required at all as the Power Service Gold is perfectly self sufficient: hassle-free and hands-free! Great advice and support from RoadPro team too, thanks again for your recommendations. Patrick

By Received via email .
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Votronic 3324 Battery-to-battery charger VCC 1212-30

Votronic 3324 Battery-to-battery charger VCC 1212-30

C85065

  In Stock

Logo for Votronic
£159.00
£132.50 ex VAT
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EZA Energie MBB 1250

EZA Energie MBB 1250

C8133

  In Stock

Logo for LAVI
£289.00
£240.83 ex VAT
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CTEK D250SE Dual DC-DC Charger

CTEK D250SE Dual DC-DC Charger

C8664B

  In Stock

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£242.75
£202.29 ex VAT
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CTEK Smartpass 120S Power Manager

CTEK Smartpass 120S Power Manager

C8663B

  In Stock

Logo for CTEK
£242.75
£202.29 ex VAT
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CTEK "OFF GRID"  Battery to Battery Charging System 20A

CTEK "OFF GRID" Battery to Battery Charging System 20A

C8666A

  In Stock

Logo for CTEK
£369.00
£307.50 ex VAT
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CTEK "OFF ROAD"  Battery to Battery Charging System 140A

CTEK "OFF ROAD" Battery to Battery Charging System 140A

C8668A

  In Stock

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£599.00
£499.17 ex VAT
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Votronic 3241 Battery Charger VBCS 30/20/250 Triple

Votronic 3241 Battery Charger VBCS 30/20/250 Triple

C85069

  In Stock

Logo for Votronic
£524.89
£437.41 ex VAT
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Votronic 3241 Battery Charger VBCS 30/20/250 Triple - Marine

Votronic 3241 Battery Charger VBCS 30/20/250 Triple - Marine

C85069M

Special Order

Logo for Votronic
£524.89
£437.41 ex VAT
To Special Order
Votronic 3243 Battery Charger VBCS 45/30/350 Triple

Votronic 3243 Battery Charger VBCS 45/30/350 Triple

C85070

  More stock due shortly

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£647.67
£539.73 ex VAT
Request Stock Alert
Votronic 3243 Battery Charger VBCS 45/30/350 Triple (Marine)

Votronic 3243 Battery Charger VBCS 45/30/350 Triple (Marine)

C85070A

  In Stock

Logo for Votronic
£647.67
£539.73 ex VAT
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Votronic 3245 Battery Charger VBCS 60/40/430 Triple

Votronic 3245 Battery Charger VBCS 60/40/430 Triple

C85071

  More stock due shortly

Logo for Votronic
£752.02
£626.68 ex VAT
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Power Service Gold 40-M Charger

Power Service Gold 40-M Charger

C8202

  In Stock

Logo for NDS
£399.00
£332.50 ex VAT
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Power Service Gold 30-M Charger

Power Service Gold 30-M Charger

C8203

  In Stock

Logo for NDS
£349.00
£290.83 ex VAT
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Power Service Gold 25-M Charger

Power Service Gold 25-M Charger

C8204

  More stock due shortly

Logo for NDS
£319.00
£265.83 ex VAT
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Power Service Plus 40 Charger

Power Service Plus 40 Charger

C8205

  In Stock

Logo for NDS
£295.90
£246.58 ex VAT
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Power Service Plus 30 Charger

Power Service Plus 30 Charger

C8206

  In Stock

Logo for NDS
£255.20
£212.67 ex VAT
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Power Service Plus 25 Charger

Power Service Plus 25 Charger

C8207

  In Stock

Logo for NDS
£231.00
£192.50 ex VAT
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Votronic 3321 Battery-to-Battery Charger VCC 1212-20C

Votronic 3321 Battery-to-Battery Charger VCC 1212-20C

C85060A

  More stock due shortly

Logo for Votronic
£149.00
£124.17 ex VAT
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Sterling Wildside Battery to Battery Charger BBC1225

Sterling Wildside Battery to Battery Charger BBC1225

C8472

  More stock due shortly

Logo for Sterling Power
£192.63
£160.53 ex VAT
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Sterling 12V Battery to Battery Charger BB1260: 60 Amp

Sterling 12V Battery to Battery Charger BB1260: 60 Amp

C8471

  In Stock

Logo for Sterling Power
£274.17
£228.48 ex VAT
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Sterling BBW1260 Battery-Battery Charger

Sterling BBW1260 Battery-Battery Charger

C8439

  In Stock

Logo for Sterling Power
£304.74
£253.95 ex VAT
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Sterling 12V Battery to Battery Charger BB1230: 30 Amp

Sterling 12V Battery to Battery Charger BB1230: 30 Amp

C8470

  In Stock

Logo for Sterling Power
£182.42
£152.02 ex VAT
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Votronic 3306 Battery-to-battery charger VCC 1212-25

Votronic 3306 Battery-to-battery charger VCC 1212-25

C85060

Special Order

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£259.91
£216.59 ex VAT
To Special Order
Votronic 3308 Battery-to-battery charger VCC 1212-45

Votronic 3308 Battery-to-battery charger VCC 1212-45

C85061

  More stock due shortly

Logo for Votronic
£326.65
£272.21 ex VAT
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Votronic 3326 Battery-to-battery charger VCC 1212-50

Votronic 3326 Battery-to-battery charger VCC 1212-50

C85066

  More stock due shortly

Logo for Votronic
£260.04
£216.70 ex VAT
Request Stock Alert
Votronic 3328 Battery-to-battery charger VCC 1212-70

Votronic 3328 Battery-to-battery charger VCC 1212-70

C85067

  More stock due shortly

Logo for Votronic
£344.07
£286.73 ex VAT
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Votronic 3329 Battery-to-battery charger VCC 1212-90

Votronic 3329 Battery-to-battery charger VCC 1212-90

C85068

Special Order

Logo for Votronic
£395.81
£329.84 ex VAT
To Special Order
Votronic 3311 Battery-to-battery charger VCC 1224-25

Votronic 3311 Battery-to-battery charger VCC 1224-25

C85062

Special Order

Logo for Votronic
£336.63
£280.53 ex VAT
To Special Order
Votronic 3313 Battery-to-battery charger VCC 2424-25

Votronic 3313 Battery-to-battery charger VCC 2424-25

C85063

Special Order

Logo for Votronic
£325.90
£271.58 ex VAT
To Special Order
Votronic 3314 Battery-to-battery charger VCC 2412-25

Votronic 3314 Battery-to-battery charger VCC 2412-25

C85064

Special Order

Logo for Votronic
£273.92
£228.27 ex VAT
To Special Order
Votronic 3315 Battery-to-battery charger VCC 2412-45

Votronic 3315 Battery-to-battery charger VCC 2412-45

C8503

Special Order

Logo for Votronic
£339.27
£282.73 ex VAT
To Special Order
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