Small Charge Controllers

If you want to power something off-grid that needs to run in clouds or dark, you'll need a battery-based system. And if you need batteries, you'll need a charge controller. Why? Because charge controllers protect batteries by regulating the current and voltage flowing into the battery from the solar panels.

At SolarPanelStore.com, you've come to the right place for charge controllers. We carry many brands, types and sizes of charge controllers. We categorize charge controllers based on amp size. We consider "small" charge controllers to be those generally rated up to 30amps.

Controllers in this category will often be based on PWM technology (Pulse Width Modulation), although there are some MPPT (Maximum Power Point Tracking) controllers too. PWM technology means that the controller pulses its charge into the batteries, changing the pulse length as the batteries' charge increases. Kind of like trying turning the tap on & off in short bursts when trying to fill a glass of water to the brim without spilling. Unlike MPPT, PWM controllers can only use the voltage needed by the battery. So if the PV array supplies more voltage than the battery needs, that extra voltage won't be used. An MPPT controller on the other hand, can take excess voltage from the array and adjust or step the voltage down to the battery's voltage level and adjust the current accordingly so the maximum amount of PV power is used.

Whether you need a really small, inexpensive unit to handle 75W of solar input (Sun Guard is a good choice), to something in the 6-20 amp range at 12 or 24 volts with flooded or sealed batteries (the workhorse Sun Saver series comes to mind), to the higher 15-30 amp range that adds gel battery capability and more advanced monitoring & diagnostics (like the ProStar series--great for RV/marine), we have the line for you.

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MidNite Brat Charge and Load Controller MNBRAT
Regular Price $ 89.99
ONLY $85.00
Morningstar SunGuard-4
Regular Price $ 38.00
ONLY $30.00
SunSaver-6 12V SS-6-12V
Regular Price $ 53.00
ONLY $42.00
SunSaver-6 12V w LVD SS-6L-12V
Regular Price $ 65.00
ONLY $52.00
SunSaver-10 12V SS-10-12V
Regular Price $ 63.00
ONLY $50.00
SunSaver-10 12V w LVD SS-10L-12V
Regular Price $ 78.00
ONLY $62.00
SunSaver-20 12V w LVD SS-20L-12V
Regular Price $ 110.00
ONLY $88.00
SunSaver-10 24V w LVD SS-10L-24V
Regular Price $ 86.00
ONLY $69.00
SunSaver-20 24V w LVD SS-20L-24V
Regular Price $ 116.00
ONLY $93.00
Sunsaver MPPT SS-MPPT-15L
Regular Price $ 304.00
ONLY $243.00
Morningstar Remote Meter RM-1
Regular Price $ 101.00
ONLY $81.00
MorningStar SunSaver Duo w Remote Meter SSD-25RM
Regular Price $ 188.00
ONLY $150.00
SunKeeper-6 SK-6
Regular Price $ 63.00
ONLY $50.00
SunKeeper-12 SK-12
Regular Price $ 89.00
ONLY $71.00
SunSport 6 Charge Controller 6A 12V
Qty. PRICE $46.75
Advanced Solar Charger 14A 24V
Regular Price $ 99.00
Qty. PRICE $85.50
Eco Energy S3 3A 12V PWM Charge Controller
Qty. PRICE $29.50
Eco Energy S3 3A 24V PWM Charge Controller
Qty. PRICE $29.50
Eco Energy S5 5A 12V PWM Charge Controller
Qty. PRICE $39.75
Eco Energy 7 Amp Voltage Switch
Qty. PRICE $45.00
Eco Energy S10D Dual Battery Controller 10A 12V
Regular Price $ 104.33
ONLY $83.50
Rugged Charger
ONLY $88.00
MorningStar Prostar MPPT PS-MPPT-25 25A 12 or 24 V
Regular Price $ 397.00
ONLY $318.00
MorningStar Prostar MPPT PS-MPPT-25-M 25A 12-24V
Regular Price $ 488.00
ONLY $390.00
MorningStar Prostar MPPT PS-MPPT-40 40A 12 or 24 V
Regular Price $ 530.00
ONLY $424.00
MorningStar Prostar MPPT PS-MPPT-40-M 40A 12-24V
Regular Price $ 621.00
ONLY $497.00
Morningstar ProStar MPPT Wire Box PS-MPPT-WB
Regular Price $ 55.00
ONLY $45.00
ProStar 15, no meter
Regular Price $ 120.00
ONLY $97.00
ProStar 15M with meter
Regular Price $ 190.00
ONLY $153.75
ProStar 15M 48V Positive GND
Regular Price $ 255.00
Qty. PRICE $191.50
ProStar 30, no meter
Regular Price $ 165.00
ONLY $129.25
ProStar 30M with meter
Regular Price $ 240.00
ONLY $186.00
ProStar 30M Positive Ground
Regular Price $ 236.00
Qty. PRICE $188.50
Relay Driver
Regular Price $ 181.00
ONLY $146.25
Outback SmartHarvest SCCP05-050 PWM 5A
Regular Price $ 41.65
ONLY $38.18
Phocos CMM Meter
ONLY $58.00