40A 12V Intelligent automatic multi-stage mains battery charger - 4Boats
40A 12V Intelligent automatic multi-stage mains battery charger - 4Boats
40A 12V Intelligent automatic multi-stage mains battery charger - 4Boats

40A 12V Intelligent automatic multi-stage mains battery charger


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Regular price£159.99
Tax included.

This?ÿ40A 12V?ÿautomatic multi-stage mains battery?ÿcharger is designed to enable safe and efficient unattended charging of a 12V battery or battery bank from a mains power source (220-240V AC). This mains charger boasts an advanced 7 stage charging process?ÿwhich delivers faster and more efficient charging,?ÿwhilst eliminating the?ÿrisk of voltage fluctuations.

This unit?ÿis able?ÿto charge either a single 12V battery, or several 12V batteries connected in parallel (batteries must be the same?ÿtype, capacity and age).

This mains battery charger is compatible with Lead Acid batteries, including AGM, Gel and Wet cell batteries.

Key features:

  • Safe?ÿunattended charging:?ÿthe unit features?ÿinbuilt safety functions (protection?ÿagainst DC short circuit, overheating, overcharging and reverse polarity of the battery), which allow the charger?ÿto be?ÿleft permanently connected to the battery?ÿfor unattended automatic charging. Unlike many other mains chargers, the charging voltage is also free from peaks which offers smooth uninterrupted charging.
  • Continued charging during battery use: the charger will continue to operate while energy is drawn from the battery during use.?ÿThe unit will maintain the charge if the battery is already at full capacity.
  • Boost-charging feature: this?ÿpreliminary charging stage can?ÿimprove battery condition and recover lost capacity from older batteries. It improves the charge delivered to the batteries, thereby increasing battery life and preventing premature battery failure.
  • Dead battery recovery:?ÿthe desulphation stage?ÿis able to break down sulphation that occurs in batteries which have been left flat for extended periods of time, returning them back to full charge.
  • Automatic temperature?ÿcontrol:?ÿto?ÿmaintain an optimal?ÿinternal temperature, the inbuilt fan?ÿis automatically enabled when a?ÿhigh temperature or charging current is detected.
  • LCD Display: shows vital information regarding the charging process (charging voltage / charging current / different charging stages). LED lights also indicate the battery type.
  • Power pack function: can provide a direct supply of power to a 12V load (e.g. 12V fridge) with no battery connected (e.g. during battery replacement).

This charger?ÿis also supplied with?ÿa?ÿ1.5m mains AC cable with a UK 3-pin plug, battery cables, and spare fuses.

Click on the 'Details and Specifications' tab for more information about this product.


  • Operating Voltage range (AC): 190V - 265V (full capacity) / 50 Hz
  • DC output current: 40A
  • DC output voltage: 12V
  • Suggested battery capacity:?ÿ40 - 300Ah
  • Bulk / absorption charging voltage: 14.2V - 14.8V DC (depending on the battery type)
  • Float charging voltage: 13.2V - 13.8V (depending on the battery type)
  • Efficiency: <88%
  • Operating temperature range: 0?øC?ÿ- 40?øC
  • Inbuilt?ÿfan
  • Isolated DC output
  • Dimensions: 226 x?ÿ175 x?ÿ95 mm
  • Weight: 2.4 kg

This product is covered by a?ÿ1 year manufacturer warranty. For more information please refer to our Terms and Conditions.

Full?ÿdetails explaining wiring and operations?ÿcan be found in the user manual supplied with this product (see Documents tab).

If you need help with installation or have any technical questions we can provide FREE?ÿsupport - please contact us by email or phone (see Contact Us page for more information).

The following documents are available to download:

User manual for 40A 12V Mains battery charger (BC1240)

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