Sunvivae PWM Solar Charge Controller 10A–100A, 12V/24V Auto with LCD & Dual USB
Sunvivae PWM Solar Charge Controller 10A–100A, 12V/24V Auto with LCD & Dual USB
PWM Solar Charge Controller for 12V & 24V Systems
Choose from ten current ratings for small off-grid solar systems, RVs, cabins and DC lighting. An LCD screen, selectable battery profiles, programmable load output and dual USB ports bring essential control into one compact unit.
One Controller for 12V or 24V Battery Systems
Connect the battery first and the controller automatically identifies a compatible 12V or 24V system. Keep the solar array open-circuit voltage within the confirmed input limit for the detected system.
12V Battery System
Maximum solar-array open-circuit voltage: 25V.
24V Battery System
Maximum solar-array open-circuit voltage: 50V.
Battery First
Connect the battery before the solar panel so the controller can identify the system voltage.
Three Battery Programs
Set the battery type before operation. Charging values must match the battery manufacturer's requirements, especially for lithium-based batteries.
B1 — Lead-Acid
For compatible 12V/24V flooded, sealed, AGM and GEL battery systems.
B2 — Lithium-Ion
Preset for a compatible 3S lithium-ion battery pack. A battery-management system is still required.
B3 — LiFePO4
Preset for a compatible 4S LiFePO4 battery pack. Confirm the charging limits before use.
LCD Monitoring and Simple Controls
View system voltage, solar charging status, battery level, DC load state, timer mode and battery selection. Adjustable float, load-disconnect and load-reconnect values help tailor operation to a compatible system.
Settings are stored after configuration, reducing repeated setup.
Three-Stage PWM Charging
Bulk, absorption and float stages manage compatible batteries through the charging cycle. Equalization must only be enabled for a battery type whose manufacturer specifically permits it; never equalize lithium batteries.
Protection for Everyday Operation
Integrated protection functions include overcurrent, short-circuit, reverse-polarity, open-circuit, overcharge and overload protection. Dual-MOS reverse-current control helps reduce unwanted backflow and heat generation.
Protective functions supplement—not replace—correct fusing, cable sizing, breakers, ventilation and proper installation.
USB Power and Programmable DC Load
Two USB ports provide a combined output of up to 5V/2.5A for compatible small devices. The DC load terminals support manual, timed and dusk-to-dawn operating modes for suitable low-voltage loads.
Choose the Current Rating for Your System
Choose according to the array's short-circuit current, battery charging requirements, wiring and protection devices—not by wattage alone.
| Variant | Listed Max PV Power — 12V | Listed Max PV Power — 24V |
|---|---|---|
| 10A | 120W | 240W |
| 20A | 240W | 480W |
| 30A | 360W | 720W |
| 40A | 480W | 960W |
| 50A | 600W | 1200W |
| 60A | 720W | 1440W |
| 70A | 840W | 1680W |
| 80A | 960W | 1920W |
| 90A | 1080W | 2160W |
| 100A | 1200W | 2400W |
Manufacturer-confirmed ratings. The controller current rating, battery's permitted charge current, cable capacity and protective devices must all be suitable. Keep total PV open-circuit voltage at or below 25V on a 12V battery system or at or below 50V on a 24V battery system.
Easy to Mount, Important to Ventilate
Four mounting holes and a compact enclosure make installation straightforward. Mount vertically on a nonflammable surface in a dry, ventilated indoor location away from rain, condensation, direct sunlight and heat sources.
Controller size: approximately 133.5 × 70 × 35 mm. Gross package weight: approximately 150 g.
Connect the Battery First
Battery
With all breakers open, connect the battery first so the controller can identify the system voltage.
Solar Panel
Confirm polarity and PV open-circuit voltage, then connect the solar input.
DC Load
Connect only a compatible low-voltage DC load within the controller's load rating.
Specifications
Electrical
System voltage: 12V/24V auto
Max PV Voc: 25V @ 12V / 50V @ 24V
Standby current: <10mA
USB: 2 ports, 5V/2.5A max combined
Operating temperature: −35°C to +60°C
Adjustable Values
Float voltage: 13.7V default
Load disconnect: 10.7V default
Load reconnect: 12.6V default
Values are adjustable where supported.
In the Box
1 × PWM solar charge controller
1 × User guide
Frequently Asked Questions
Is this an MPPT controller?
No. It uses three-stage PWM charging. Do not describe or install it as an MPPT controller.
Does it automatically detect 12V or 24V?
Yes, after the battery is connected first. The controller must detect the battery voltage before the solar panel is connected.
Can I charge a lithium battery?
Only a compatible battery pack using the correct B2 or B3 profile and a functioning battery-management system. Confirm all charging voltages with the battery manufacturer before use.
Can the USB ports deliver 2.5A each?
No. The listed maximum is 5V/2.5A shared across the two USB outputs.
Can I install it outside?
No. The enclosure is intended for a dry, ventilated indoor location and must be protected from rain, condensation and direct sunlight.
How do I choose 10A through 100A?
Base the selection on PV short-circuit current, battery charge-current limit, system voltage, cable size, fuses and breakers. If unsure, ask a qualified installer to size the system.
Not Sure Which Current Rating to Choose?
Send us your panel Voc, Isc and wattage together with your battery voltage, chemistry and capacity.
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