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12V 30A Solar Charge Regulator


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About this product


  • Regulates the charging and discharging cycles of 12V batteries
  • Large LCD screen for easy reading
  • Handles up to 30A of solar charging

Product overview

• Regulates the charging and discharging cycles of 12V batteries
• Large LCD screen for easy reading
• Handles up to 30A of solar charging
• Fixing holes to permanently mount the unit
• Battery reverse polarity protection
• Overload and overcharge protection
• Battery open circuit protection
• Load short circuit protection
• Deep discharge protection
• Suitable for loads up to 30A (500W solar panel)

A 30A charge regulator is designed to control the charging process from the solar panel to the battery as well as the power drawn from the battery to feed the outputs.
All solar panels generally require a voltage regulator to ensure that the battery is not overcharged. The charge regulator is an electronic controller that switches on the connection to the batteries solar cells if the battery is empty and switches off again when the battery is fully charged.
It provides over-charging, over-discharging, short circuit, over-load and reverse polarity protection, therefore ensuring your solar system works at best capacity. This solar charge regulator uses the latest Microcomputer-chip for intelligent control and a PWM (pulse width modulation) charging circuit is used for higher efficiency.

Rated 5 out of 5 by from works great for me.!! brought it two years ago..and still working great...tells me all i need to know ie how much sun is charging my batterys and how much power or charge is in my batterys.. running off two 100w pannels.what else do you need to know and im only a woman..!!
Date published: 2015-04-08
Rated 4 out of 5 by from Does the job well but has some quirks. I've installed our regulator with a 100 Watt panel on the caravan and for some months it's been really good with the battery voltage always staying above 12v. This week the regulator keeps tripping out and alarming and I have to disconnect the battery to reset it which is a real nuisance. The battery voltage was low (11.5V) and I'm fairly certain that the trips are caused when the load spikes so I'm going to fit a choke this week. In the meantime it's been a fine day and the battery voltage has recovered. No more trips....
Date published: 2014-08-03
Rated 5 out of 5 by from Excellent charge regulator! I have used several different Maplin supplied regulators. They are all good but this is the best one! I have 2 of these, each with their own 12v Battery and each with their own 150W solar panel. The batteries are connected in series (direct NOT via the regulator O/P) and I am using the Maplin 24V 800W inverter. So far so good!
Date published: 2013-08-13
Rated 5 out of 5 by from Excellent Regulator very easy to fit and great visual information.
Date published: 2012-10-31
Rated 5 out of 5 by from Good piece of equipment Have just started experimenting with solar PV and purchased a 100w Panel complete with 10 amp Solar Regulator. Decided that 10amps was inadequate so bought this unit. Appears to be well made with 4mm connections along the bottom edge. Good heat sink on rear. The display is easy to read from a distance of Five feet sorry dont do metric working very well with my panel
Date published: 2014-03-26
Rated 5 out of 5 by from Just the job Bought this to use with 30w solar panel. Gives permanent reading of battery voltage and by press of button, charge current is shown. Works well and does just what I need to keep my caravan battery charged.
Date published: 2014-07-25
Rated 5 out of 5 by from solar regulator this is a really good piece of electronics easy to setup and connect to the readout is always on you can read it from several feet away. connected 4 solar panels to it and a leisure battery to it and the battery has never gone below 12v and shuts input when it reaches 14v great price
Date published: 2015-06-05
Rated 4 out of 5 by from Good features and display The display shows the battery voltage which saves having to use a separate multimeter. Likewise with charging current from panels. The additional switched 12V output is useful for my 12V kettle. One problem is sometimes in bright sunshine the voltage overshoots 15.5V which causes my inverter to cut out periodically but eventually the regulator settles down and switches off the charging current at 15.5V like it's supposed to.
Date published: 2016-08-19
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Technical specifications:
Max. solar input current: 30A
Max. solar voltage input (Voc) : 28V
Max. load current: 30A
Over discharge voltage: 10.7V±0.4V
Output voltage: DC12V
No-load loss: <25mA
Voltage loss charging circuit: =0.4V
Voltage loss of discharging circuit: =0.2V
Operating temperature: -25° - +40°

Could you tell me please if this regulator needs a heat sink?

Asked by: Eddie B
No this doesn't require a heat sink
Answered by: Billy
Date published: 2017-12-04

Hi there&nbsp; Can you tell me if this product is a MPPT controller? If not do you have an equivalent one.&nbsp; I will be running a 250w panel to a 12v battery bank.&nbsp; Cheers.&nbsp;

Asked by: Dazza
Unfortunately we do not stock a suitable item.
Answered by: Billy
Date published: 2017-05-27

Can the load output connection on this unit be connected to a Sargent EC465 PSU. There is a spare lead which is connected to P14 on this unit for Smart charging

Asked by: Monty2704
Sorry but we would be unable to advise as to usage and or suitability with 3rd party manufacture products with which we have no familiarity. In this particular example it would be advisable to contact the manufacturer of that component for advice to the usage you are suggesting.
Answered by: Les
Date published: 2017-05-08

Solar panel produces 24volts will this regulate to 12 v to charge battery&nbsp;

Asked by: Anthony
No this only regulates the charging and discharging cycles of batteries
Answered by: Dale
Date published: 2017-04-22

i have two batteries on my boat, both 12v 110ah. my open circuit voltage is 12v. i want to connect a 100w solar panel to charge both batteries. will this controller do the job or would i need a dual controller?

Asked by: iosis
This unit is designed for single battery charge only as long as the total amperage from the panel/panels you use does not exceed 30A If the batteries are wired in the correct format you could possibly use a single controller (as long as you don't exceed it's operational parameters) but you would need to research how to do this we cannot advise.
Answered by: Les
Date published: 2017-03-09

Charging a 12v battery on a boat. The battery is trickle charged from the outboard engine when that engine is running. I want to permanently connect a solar panel to maintain charging when the engine is not running. Is this possible?

Asked by: Peter
Answered by: Les
Date published: 2018-03-16

Is it mppt type charger ? Pwm

Asked by: Paul
No, I am sorry but the item will not work for this use.
Answered by: Dominic
Date published: 2017-01-27

Would this regulator &nbsp;be alright to use with a 100 watt panel connected to 4 x &nbsp; 12 volt 118amp AGM batteries&nbsp;

Asked by: Dps72
Yes, I am pleased to advise the item will support this use.
Answered by: Dominic
Date published: 2016-09-08
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