45A Solar Battery Charge Controller – 12V, 24V & 48V Solar PV Systems
45A solar battery charge controller suitable for 12V, 24V and 48V off-grid solar PV systems. Provides controlled battery charging with built-in protection against overcharging, reverse polarity, overload, over-temperature and excessive discharge, with a display for monitoring charging voltage and current.
Solar Charge Controller for 12V, 24V and 48V Battery Systems
The 45A solar battery charge controller is designed to regulate the flow of electricity between solar panels and a connected battery bank.
Suitable for 12V, 24V and 48V solar battery systems, this controller provides controlled battery charging while incorporating a range of electrical protection functions for the solar panel, battery and load connections.
It is particularly suitable for off-grid solar systems, battery charging applications, cabins, remote buildings, mobile solar systems and other installations where solar energy needs to be stored safely for later use.
The controller also provides a display showing relevant charging voltage and current information, allowing the system operator to monitor the charging process.
45A Solar Charge Controller Features
The controller incorporates protection functions designed to help protect the connected solar PV and battery equipment.
Features include:
45A maximum charge current
Suitable for 12V, 24V and 48V systems
Solar panel reverse-polarity protection
Battery reverse-polarity protection
Load output reverse-polarity protection
Excessive charging-current protection
Reverse-current protection
Surge protection
Under-voltage protection
Over-temperature protection
Load overload protection
Battery discharge protection
Display showing charging voltage and current
The controller should always be operated within the manufacturer’s specified voltage and current limits.
What Does a Solar Battery Charge Controller Do
Solar panels produce electricity at a variable voltage and current depending on sunlight and operating conditions.
A solar charge controller regulates the energy going into the battery so that the battery can be charged correctly.
A typical off-grid solar system operates:
Solar panels → charge controller → battery → inverter/load
The charge controller therefore sits between the solar array and battery storage and forms an important part of an off-grid solar energy system.
45A Solar Controller for Off-Grid Systems
This controller is suitable for a variety of off-grid solar PV applications, including:
Small off-grid properties
Cabins
Workshops
Remote buildings
Agricultural applications
Mobile solar systems
Battery charging systems
Backup solar systems
Leisure and recreational applications
Remote lighting systems
The correct controller should be selected according to the solar panel array, battery voltage and maximum charging current.
12V, 24V and 48V Battery Compatibility
The controller is designed to work with 12V, 24V and 48V battery systems.
This provides flexibility when designing an off-grid solar installation.
Lower-voltage systems can be suitable for smaller solar applications, while 24V and 48V systems are often preferable where higher power requirements and longer cable runs are involved.
Before ordering, confirm that the selected solar array and battery bank are compatible with the controller’s operating voltage and maximum charging-current specification.
Choosing the Correct Solar Charge Controller
The charge controller should not be selected simply by looking at the battery voltage.
You should also consider:
Solar panel total wattage
Maximum solar panel current
Solar array voltage
Battery voltage
Battery chemistry
Maximum charging current
Cable size
Maximum load requirements
System expansion requirements
A controller that is too small for the solar array may restrict the available charging capacity, while an incorrectly matched controller may not operate safely or efficiently.
Solar Panels for Battery Charging
The controller can be used as part of a solar PV battery charging system where compatible solar panels are connected to the controller and the controller is connected to the battery bank.
The battery and charge controller must be correctly matched to the intended solar system.
Battery Cables and Connections
Correctly sized cabling is particularly important in low-voltage solar battery systems because high currents can flow between the battery, charge controller and inverter.
Solar PV Systems supplies solar charge controllers, batteries, inverters, solar panels, cables and associated off-grid equipment throughout the UK.
Our equipment is suitable for DIY, trade, domestic, mobile, commercial and remote solar projects.
We provide equipment and technical product information but do not provide an installation service.
Where electrical installation or system commissioning requires specialist knowledge or certification, the work should be completed by a suitably qualified professional.
Solar Battery Charge Controller 45A
£324.00
45A Solar Battery Charge Controller – 12V, 24V & 48V Solar PV Systems
45A solar battery charge controller suitable for 12V, 24V and 48V off-grid solar PV systems. Provides controlled battery charging with built-in protection against overcharging, reverse polarity, overload, over-temperature and excessive discharge, with a display for monitoring charging voltage and current.
Description
45A Solar Battery Charge Controller
Solar Charge Controller for 12V, 24V and 48V Battery Systems
The 45A solar battery charge controller is designed to regulate the flow of electricity between solar panels and a connected battery bank.
Suitable for 12V, 24V and 48V solar battery systems, this controller provides controlled battery charging while incorporating a range of electrical protection functions for the solar panel, battery and load connections.
It is particularly suitable for off-grid solar systems, battery charging applications, cabins, remote buildings, mobile solar systems and other installations where solar energy needs to be stored safely for later use.
The controller also provides a display showing relevant charging voltage and current information, allowing the system operator to monitor the charging process.
45A Solar Charge Controller Features
The controller incorporates protection functions designed to help protect the connected solar PV and battery equipment.
Features include:
The controller should always be operated within the manufacturer’s specified voltage and current limits.
What Does a Solar Battery Charge Controller Do
Solar panels produce electricity at a variable voltage and current depending on sunlight and operating conditions.
A solar charge controller regulates the energy going into the battery so that the battery can be charged correctly.
A typical off-grid solar system operates:
Solar panels → charge controller → battery → inverter/load
The charge controller therefore sits between the solar array and battery storage and forms an important part of an off-grid solar energy system.
45A Solar Controller for Off-Grid Systems
This controller is suitable for a variety of off-grid solar PV applications, including:
The correct controller should be selected according to the solar panel array, battery voltage and maximum charging current.
12V, 24V and 48V Battery Compatibility
The controller is designed to work with 12V, 24V and 48V battery systems.
This provides flexibility when designing an off-grid solar installation.
Lower-voltage systems can be suitable for smaller solar applications, while 24V and 48V systems are often preferable where higher power requirements and longer cable runs are involved.
Before ordering, confirm that the selected solar array and battery bank are compatible with the controller’s operating voltage and maximum charging-current specification.
Choosing the Correct Solar Charge Controller
The charge controller should not be selected simply by looking at the battery voltage.
You should also consider:
A controller that is too small for the solar array may restrict the available charging capacity, while an incorrectly matched controller may not operate safely or efficiently.
Solar Panels for Battery Charging
The controller can be used as part of a solar PV battery charging system where compatible solar panels are connected to the controller and the controller is connected to the battery bank.
For smaller solar charging applications, see our Small Solar Panels.
For larger solar PV applications, see our Domestic Solar Panels.
The solar array must be correctly matched to the controller’s permitted input voltage and charging capacity.
Off-Grid Solar Batteries
The charge controller can form part of a complete off-grid battery storage system.
We supply a range of batteries for off-grid solar applications, including AGM, gel, lithium and other battery technologies.
See our Off-Grid Batteries for the available battery storage options.
For individual battery products, see our Solar Batteries.
The battery and charge controller must be correctly matched to the intended solar system.
Battery Cables and Connections
Correctly sized cabling is particularly important in low-voltage solar battery systems because high currents can flow between the battery, charge controller and inverter.
For ready-made battery connections, see our Solar Battery Cable Lengths.
For solar PV connections, see our 4mm Solar PV Cable.
For compatible PV connectors, see our MC4 Cable Connectors.
Solar Charge Controller and Off-Grid Inverter
A charge controller manages battery charging, while an inverter converts stored battery DC electricity into usable AC electricity.
For customers requiring 230V AC output from their battery system, see our 12/24V Phoenix Inverters.
For integrated off-grid inverter and charger systems, see our Victron Energy EasySolar Systems.
For additional off-grid inverter options, see our Off-Grid Inverters.
Complete Off-Grid Solar System
A typical off-grid solar system can contain:
For additional system components, visit our Off-Grid Accessories.
For complete off-grid systems, see our Off-Grid Solar Kits.
Solar Battery Charge Controller for UK Projects
Solar PV Systems supplies solar charge controllers, batteries, inverters, solar panels, cables and associated off-grid equipment throughout the UK.
Our equipment is suitable for DIY, trade, domestic, mobile, commercial and remote solar projects.
We provide equipment and technical product information but do not provide an installation service.
Where electrical installation or system commissioning requires specialist knowledge or certification, the work should be completed by a suitably qualified professional.
45A Solar Charge Controller Specification
Product type: Solar battery charge controller
Maximum charging current: 45A
System voltage: 12V / 24V / 48V
Application: Solar PV battery charging
System type: Off-grid solar
Display: Charging voltage and current monitoring
Protection: Reverse polarity, over-current, reverse current, surge, under-voltage, over-temperature, overload and battery discharge protection
Suitable for: Solar panels, battery banks and compatible DC loads
Supply: Equipment only – installation not included
Important: Always check the solar array voltage, maximum current, battery voltage, battery type and controller specifications before ordering.
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