Solar Charge Controllers

Not sure where to start?

Size your system, then pick the controller

Every installation is different. Tell us your battery bank, your panels and your battery type — this tool works out the charging current you will actually get, how long a charge will take, and which Systellar controller fits. It checks every MPPT controller in our online range.

12V – 120V banks Every model in stock online Cold-morning Voc margin included Made in India

Your system

Start from a typical system, then adjust:
The nominal voltage of the battery bank the controller will charge.
Chemistry sets the charging voltage and how much of the bank you can safely use.
Ah
Total capacity at the bank voltage above. Needed for the charging-time estimate.
Wp
nos.
Wattage of one panel, then how many panels. Printed on the label on the back of the panel.
Also on the panel label, as Voc. This is what decides how many panels can go in a series string.
Leave on automatic and we will suggest the safest wiring for each controller.
System defined0 of 5

We will energise the diagram and size the whole system for you.

Animated diagram of solar panels charging a battery through a Systellar charge controller 4 × 450 Wp 1800 Wp array 200 V string SYSTELLAR CHARGING 42.0A 1210 W · MPPT CC-MPPT-Gen6 42 A @ 28.8 V 20% → 100% 200 Ah · 24 V LiFePO4 Full in ≈ 3.4 h of good sun
Your system, unpowered Enter your system details, then press Build my system to switch it on.
Solar side (panel string) Battery side (charging current) Animation speed follows the current your system would actually make

Want this checked by an engineer?

These figures are a sizing estimate from the numbers you entered. Send them to us and we will confirm the exact model, the wiring layout and any accessories you need — free of charge, before you buy. We design and manufacture every controller here in India, so we can also build to a specification you cannot find off the shelf.

Send these specs to an engineer Call +91 95680 04455 See the full comparison table
How these numbers are worked out
  • Charging current = array watts × MPPT conversion efficiency ÷ battery charging voltage, then capped at the controller's rated current.
  • Charging voltage per 12 V block: LiFePO4 14.6 V · Li-ion/NMC 12.6 V · lead-acid 14.4 V.
  • Usable capacity: 80% of rated Ah for lithium, 50% for lead-acid — the depth of discharge each chemistry tolerates without shortening its life.
  • Charging efficiency: 97% lithium, 85% lead-acid (lead-acid loses more to heat and gassing near the top of the charge).
  • Real-world derate: 80% of nameplate array output for irradiance, panel temperature, dust and cable loss. "Good sun" means roughly 4.5 peak-sun-hours a day, a fair all-India annual average.
  • The string has to clear a floor as well as a ceiling. Ceiling: panel Voc is highest on a cold, clear morning, so we multiply string Voc by 1.10 and require it to stay under the controller's input limit — that is the moment a controller gets damaged, not midday. Floor: Vmp falls about 16% as a panel heats to rooftop temperature, and an MPPT is a step-down converter, so if hot Vmp drops below the battery's charging voltage it simply stops charging on the hottest afternoons. We therefore require string Voc at rating to be at least 1.45 × the charging voltage.
  • Wiring is chosen as the longest series string that fits that window and divides your panel count evenly — fewer parallel strings means less current, thinner cable and lower losses. If no even split fits, we say so rather than quietly recommending unequal strings.
  • Figures are indicative. Site shading, panel orientation, cable runs and battery age all move the result.
Compare the range

MPPT solar charge controller comparison

Four MPPT models cover every off-grid system we serve, from a single 12V battery to a 120V industrial bank. Work down from your battery bank voltage and array size — those two figures decide the controller, and everything else follows.

→ Scroll the table sideways to see all four models, and up and down to compare specifications.

Compare
Systellar CC-MPPT-Compact-100 MPPT solar charge controller with LCD display
CC-MPPT-Compact-100
12V / 24V · 25A & 50A · Voc 85V
Entry 12V–24V
Buy 25A — ₹5,999 → Buy 50A — ₹6,299 →
Systellar CC-MPPT-Compact-200 MPPT solar charge controller with LCD display
CC-MPPT-Compact-200
12V–48V · 25A & 50A · Voc 175V
Entry 12V–24V–36V–48V
Buy 25A — ₹6,599 → Buy 50A — ₹7,299 →
Systellar CC-MPPT-Gen6-200 industrial MPPT solar charge controller with graphic LCD
CC-MPPT-Gen6-200
12V–48V · 50A & 75A · Voc 175V
Best Seller
Buy 50A — ₹9,899 → Buy 75A — ₹12,999 →
Systellar CC-MPPT-HV-300 high voltage MPPT solar charge controller front view
CC-MPPT-HV-300
48V–120V · 60A · Voc up to 265V
High voltage MPPT
Buy 60A — ₹19,999 →
Best suited to Small homes and off-grid 12V / 24V systems Homes and small commercial sites running 36V / 48V banks Large commercial and industrial installations High-voltage industrial, telecom and large off-grid plants
Battery bank voltage 12V / 24VAuto-detect 12V / 24V / 36V / 48VAuto-detect 12V / 24V / 36V / 48VField programmable 48V / 60V / 72V / 96V / 120VField programmable
Max charge current 25A or 50A 25A or 50A 50A or 75A 60A
Max solar input (Voc) 85VAbsolute max 100V 175VAbsolute max 200V 175VAbsolute max 200V 106V – 265VAbsolute max 300V
Max solar array 12V — 375 / 750 Wp24V — 750 / 1,500 Wp25A / 50A model 12V — 375 / 750 Wp24V — 750 / 1,500 Wp36V — 1,125 / 2,250 Wp48V — 1,500 / 3,000 Wp25A / 50A model 12V — 800 / 1,200 Wp24V — 1,600 / 2,400 Wp36V — 2,400 / 3,600 Wp48V — 3,200 / 4,800 Wp50A / 75A model 48V — 3,840 Wp60V — 4,800 Wp72V — 5,760 Wp96V — 7,680 Wp120V — 9,600 Wp
Conversion efficiency 12V — 97.3%24V — 97.8% 12V — 97.1%24V — 97.1%36V — 97.4%48V — 97.8% 97.3% – 98.8%Depends on bank voltage Up to 96%High-voltage conversion carries more switching loss
DC load output Up to 20AAlways-on, dusk-to-dawn or 2–14 h timer Up to 20AAlways-on, dusk-to-dawn or 2–14 h timer Up to 40AAlways-on, dusk-to-dawn or 2–14 h timer —Not offered on this model
Power Saver relay Optional PowerSaver boxSold separately Optional PowerSaver boxSold separately Built in250V AC / 20A Built in250V AC / 20A · handles ~4 kW
Display & setup 16×2 backlit LCD2 rows on one screen · 3-key panel 16×2 backlit LCD2 rows on one screen · 3-key panel 128×64 graphic LCD8 rows on one screen · 5-key panel 128×64 graphic LCD8 rows on one screen · 5-key panel
Battery chemistries Lead acid (SMF / FLA / tubular / gel), Li-ion, LiFePO4, Ni-CdFactory pre-set Lead acid (SMF / FLA / tubular / gel), Li-ion, LiFePO4, Ni-CdFactory pre-set Lead acid (SMF / FLA / tubular / gel), Li-ion, LiFePO4, Ni-CdField programmable Lead acid (SMF / FLA / tubular / gel), Li-ion, LiFePO4, Ni-CdField programmable
Battery temperature sensor Optional accessory3 m cable · temperature-compensated charging for lead-acid batteries Optional accessory3 m cable · temperature-compensated charging for lead-acid batteries Optional accessory3 m cable · temperature-compensated charging for lead-acid batteries Optional accessory3 m cable · temperature-compensated charging for lead-acid batteries
Remote monitoring Optional RS-485 Modbus cardSold separately Optional RS-485 Modbus cardSold separately Optional RS-485 Modbus cardSold separately Optional RS-485 Modbus cardSold separately
Warranty & build 2 year1.4 kg (25A) · 2.5 kg (50A)190 × 160 × 80 mm (H×W×D) 2 year1.4 kg (25A) · 2.5 kg (50A)190 × 160 × 80 mm (H×W×D) 2 year5.5 kg300 × 225 × 120 mm (H×W×D) 2 year5.5 kg280 × 290 × 140 mm (H×W×D)
Buy online
Buy 25A — ₹5,999 → Buy 50A — ₹6,299 →
Buy 25A — ₹6,599 → Buy 50A — ₹7,299 →
Buy 50A — ₹9,899 → Buy 75A — ₹12,999 →
Buy 60A — ₹19,999 →

For any Queries you can Call +91-9568004455 or send an email to info@systellar.in