Automatic 12V 24V 15 Amp SMPS Battery Charger
An automatic battery charger for 12V and 24V lead-acid batteries — auto-detects voltage, no manual switch needed. Set current 0–15A with the 6-step knob. Live digital ammeter. Boost mode for fast charging and dead battery recovery; Float mode maintains a full battery indefinitely, safe for 24×7 use. Works with tubular inverter, car, truck, tractor, DG set, solar and forklift batteries. Ships from Delhi to every corner of India.
Key Specifications, Features & Battery Compatibility
Everything you need to know before buying — in one place
What Is This Charger?
The Samco 12V 24V 15A is an automatic SMPS battery charger for 12V and 24V lead-acid batteries — car, tubular inverter, truck, tractor, forklift, solar, and DG set. Unlike fixed-output chargers, it auto-detects battery voltage (12V or 24V), controls output current from 0 to 15 Amps via a 6-step knob, and operates in two modes: Boost (fast charge and dead battery recovery) and Float (battery maintainer for indefinite safe connection). A live digital ammeter shows real-time charging current at all times.
SMPS (Switched Mode Power Supply) technology makes this charger lighter and more efficient than transformer-based chargers. The wide input range of 160–280V AC is designed specifically for India's fluctuating grid voltage. Compatible with lead-acid, tubular, flat-plate, SMF, VRLA, and GEL batteries from 4Ah to 200Ah. Manufactured and sold by Samco Battery, Delhi, established 2000.
A 100Ah tubular battery charges from empty to full in approximately 10–12 hours at 10A. A 150Ah tubular battery takes approximately 14–16 hours at 10A. At the maximum 15A setting, charge times reduce by roughly 30–40%. The ammeter reading near 0A confirms charge completion — no guesswork needed.
How It Works — Boost, CC/CV & Float
Three intelligent charging stages that protect your battery and extend its life
BOOST MODE — Fast Charge & Dead Battery Recovery
- Flip switch to BOOST to start charging
- Set 0–15A via the 6-step rotary knob
- Revives dead & deeply discharged batteries
- Digital ammeter shows live amps in real time
- Ideal for workshops, garages, daily use
CC/CV TAPER — Know When Battery Is Full
- Current drops automatically as battery fills
- Ammeter falls from set amps toward near-zero
- Near 0A on display = battery is nearly full
- Safe CC/CV profile for all lead-acid types
- No overcharge risk in normal use
FLOAT MODE — Battery Maintainer for Long-Term Use
- Flip switch to FLOAT after battery is full
- Low trickle current maintains charge safely
- True battery maintainer — no overcharge risk
- Keeps DG set & vehicle batteries always ready
- Safe for 24×7 unattended attachment
How to Charge a Dead Battery — 6 Steps
Recover a deeply discharged car, inverter, tractor, or truck battery — step by step
Connect the Clamps
Charger powered off. Red clamp to battery positive (+), black clamp to negative (–). Reverse polarity protection is built in, but avoid reverse connection.
Set Switch to BOOST
Flip the FCBC switch to BOOST. This activates the full charging current output. Float mode alone will not charge a dead or low battery — Boost is required.
Start at Low Current (1–3A)
Turn the 6-step knob to the lowest position. Low current prevents thermal stress on a deeply discharged battery and allows voltage to build up gradually.
Increase Current Gradually
Once the ammeter shows steady acceptance, increase the knob. Car & inverter batteries: 6–10A. Truck & industrial (100Ah+): up to 15A. Tractor: 5–8A.
Ammeter → 0A = Battery Full
Current drops automatically as the battery fills (CC/CV taper). When the ammeter reads near 0A, charging is complete. No timer needed — the ammeter tells you.
Switch to FLOAT for Maintenance
Flip to FLOAT. The charger now delivers safe trickle current indefinitely — no overcharge risk. Leave connected 24×7 for DG set, vehicle, or inverter standby batteries.
Common Problems This Charger Solves
Inverter battery nahi chal rahi? Car start nahi? Tractor dead? — yeh charger 6 common problems solve karta hai
What Can This Charger Charge? — 12V & 24V Applications
One charger for 20+ types of 12V and 24V lead-acid batteries. Delhi se poore India mein shipping.
12V Battery Charger Applications — Car · Tubular Inverter · Bike · Tractor · DG Set · Solar · UPS · Security · Telecom
24V Battery Charger Applications — Truck · Forklift · Stacker · Industrial · Solar · Marine
Who Uses This Charger? — 9 Types of Buyers Across India
From home inverter owners to industrial fleet operators — who buys this and why
Charges 100–200Ah Exide, Luminous, Amaron, Okaya tubular inverter batteries at home. Float prevents overcharge during long power cuts. Ghar ki inverter battery bar bar discharge hoti hai — boost se recover karein, float se maintain karein.
Daily charging of multiple cars, SUVs, and tempos (35–100Ah). Boost revives dead batteries same day. Variable 0–15A knob handles small two-wheelers to large LCVs. One charger for the full workshop floor.
Auto-detects 24V truck batteries (2×12V series). 15A fast charge gets trucks road-ready quickly. Float keeps standby vehicles at 100% charge. Tata, Ashok Leyland, Eicher fleet maintenance.
Factories, hospitals, housing societies, schools, petrol pumps. Float continuously maintains 12V/24V DG starter batteries. Load-shedding ke waqt DG instant start guarantee. No manual disconnect needed.
Seasonal deep charge for 50–150Ah tractor and harvester batteries. Variable knob prevents overcharge damage. Boost recovers batteries idle through off-season. Rabi/Kharif ke baad tractor start nahi karta — yeh charger bachata hai.
24V forklift, electric stacker, and pallet jack batteries in warehouses, cold storage, and factories. Variable current protects costly traction cells. Float during shift gaps reduces long-term battery wear.
Charges 12V and 24V solar battery banks for rooftop solar, rural electrification, and shops without stable grid power. Boost fills deeply discharged cells; float maintains between solar cycles without overcharging.
Boost mode lifts deeply discharged batteries that auto-cutoff smart chargers refuse to recognise. Variable 0–15A covers reconditioning across all lead-acid types — car, tubular, SMF, VRLA, GEL. The professional's tool.
12V/24V backup for alarm panels, CCTV networks, boom barriers, ATM batteries, and telecom BTS sites. Float maintains 24×7 charge without overcharge — mission-critical systems that cannot go dark.
SMPS vs Transformer vs Smart Auto-Cutoff — Which Charger Should You Buy?
Understanding the difference helps you buy right the first time — and not replace a recoverable battery
| Feature | Samco 15A SMPS← This Charger | Basic Transformer Charger |
Smart Auto-Cutoff Charger |
|---|---|---|---|
| 12V & 24V Support | ✅ Auto-detects both | Usually one voltage only | Usually 12V only |
| Current Control | ✅ Variable 0–15A (6-step knob) | Fixed — no user control | Fixed auto-selected |
| Dead Battery Recovery | ✅ Manual Boost at low amps | Sometimes — no control | ❌ Often rejects low-voltage cells |
| Battery Maintainer Mode | ✅ Float — safe 24×7 | ❌ Must disconnect manually | Varies by model |
| Live Current Display | ✅ Digital ammeter | ❌ None | ❌ Rarely |
| Indian Grid Range (160–280V) | ✅ Full range supported | Often limited ±10% | Varies |
| Tubular Battery (100–200Ah) | ✅ Up to 200Ah | Varies | Often limited to 100Ah |
| Weight | ✅ Lightweight (SMPS circuit) | Heavy (iron-core transformer) | Light |
| Suitable for All Lead-Acid Types | ✅ Lead-acid · Tubular · SMF · VRLA · GEL | Mostly flooded lead-acid | Varies — check specs |
Technical Specifications & Price
| Input Voltage | 160–280V AC, 50Hz |
| Output Voltages | 12V / 24V (Auto Detection) |
| Max Charging Current | 15 Amps |
| Current Control | 0–15A, 6-step rotary knob |
| Display | Digital ammeter — live current reading |
| Mode Switch | Boost (charge) / Float (maintain) |
| Technology | High-efficiency SMPS |
| Battery Types | Lead Acid, Tubular, SMF, VRLA, GEL |
| Compatible Capacity | 4Ah – 200Ah |
| Protection | Overload, Short-circuit, Reverse polarity |
| Warranty | 6 Months Warranty |
| Dispatch | Same day from Delhi |
| Delivery | 2–7 business days · 19,000+ pin codes pan-India |
Order Today — Ships Same Day from Delhi
₹5,575 all-in · Free shipping · 6 Months Warranty · Dealer discount available · Delivered in 2–7 business days anywhere in India
Free Shipping Across India — Delivery by Zone
Same-day dispatch from Delhi · Cash on Delivery · 19,000+ PIN codes · All 28 states & 8 union territories covered
| Zone | States & Cities Covered | Delivery Time | Shipping Cost |
|---|---|---|---|
| 🏙️ Delhi NCR | Delhi, Noida, Gurugram, Faridabad, Ghaziabad, Greater Noida | 1–2 days | FREE |
| 🌐 North India | Haryana (Hisar, Ambala, Karnal) · Punjab (Amritsar, Ludhiana, Jalandhar, Patiala) · Rajasthan (Jaipur, Jodhpur, Kota, Bikaner, Udaipur) · Uttar Pradesh (Lucknow, Kanpur, Varanasi, Agra, Meerut, Allahabad) · Uttarakhand (Dehradun, Haridwar) · Himachal Pradesh (Shimla, Manali) · Jammu & Kashmir · Chandigarh | 2–4 days | FREE |
| 🌐 West India | Maharashtra (Mumbai, Pune, Nagpur, Nashik, Aurangabad, Thane, Navi Mumbai) · Gujarat (Ahmedabad, Surat, Vadodara, Rajkot, Bhavnagar, Gandhinagar) · Goa (Panaji, Margao) | 2–5 days | FREE |
| 🌐 Central India | Madhya Pradesh (Bhopal, Indore, Gwalior, Jabalpur) · Chhattisgarh (Raipur, Bhilai, Bilaspur) | 3–5 days | FREE |
| 🌐 South India | Karnataka (Bengaluru, Mysuru, Hubli, Mangaluru, Belagavi) · Tamil Nadu (Chennai, Coimbatore, Madurai, Salem, Trichy, Vellore) · Kerala (Kochi, Thiruvananthapuram, Kozhikode, Thrissur) · Andhra Pradesh (Visakhapatnam, Vijayawada, Tirupati, Guntur) · Telangana (Hyderabad, Warangal, Karimnagar) · Puducherry | 3–6 days | FREE |
| 🌐 East India | West Bengal (Kolkata, Howrah, Durgapur, Asansol, Siliguri) · Bihar (Patna, Gaya, Muzaffarpur, Bhagalpur) · Jharkhand (Ranchi, Jamshedpur, Dhanbad, Bokaro) · Odisha (Bhubaneswar, Cuttack, Rourkela, Sambalpur) | 3–6 days | FREE |
| 🌐 Northeast India | Assam (Guwahati, Dibrugarh, Silchar) · Meghalaya (Shillong) · Manipur (Imphal) · Tripura (Agartala) · Nagaland (Kohima, Dimapur) · Arunachal Pradesh (Itanagar) · Mizoram (Aizawl) · Sikkim (Gangtok) | 4–7 days | FREE |
| 🏝️ Islands & Remote UTs | Andaman & Nicobar Islands (Port Blair) · Lakshadweep · Dadra & Nagar Haveli · Daman & Diu · Ladakh (Leh, Kargil) | 5–7 days | FREE |
Dispatched via India Post Speed Post & approved private couriers · Cash on Delivery available · Track your order via WhatsApp +91 99539 35912
Frequently Asked Questions
Which battery voltages does this charger support — 12V or 24V?
It supports both 12V and 24V lead-acid batteries with automatic voltage detection — no manual selection needed. Compatible with car, inverter, truck, tractor, forklift, solar, and generator batteries from 4Ah to 200Ah capacity.
What is the price? Is GST and shipping included?
The price is ₹5,575 — all taxes included, with FREE shipping across India. Delivery in 2–7 business days to any city, town, or village in India. Dealer and wholesale discounts available — contact us on WhatsApp for bulk pricing.
What does the Boost and Float switch do?
The FCBC switch toggles between two modes. BOOST delivers 0–15A charging current — for fast charging and reviving dead or deeply discharged batteries. FLOAT delivers a safe low trickle current that maintains a fully charged battery indefinitely as a battery maintainer, with no overcharge risk.
Can it charge a dead or deeply discharged battery?
Yes. Set to BOOST mode and turn the knob to low current (1–3A) to slowly recover a deeply discharged battery. As battery voltage recovers, gradually increase current. This manual control allows recovery of batteries that standard auto-cutoff smart chargers reject.
How does the 0–15A 6-step variable knob work?
The rotary knob has 6 positions spanning 0–15A. Use low settings (1–3A) for small batteries — bikes and CCTV backups. Use mid settings (6–10A) for car and inverter batteries. Use full 15A for large truck or industrial batteries (100Ah+). The digital ammeter shows exact real-time amps at all times.
How fast is delivery across India?
Orders are dispatched same day from our Delhi store at Gokhale Market, Kashmere Gate. Delivery in 2–7 business days to any city, town, or village across India. We ship to 19,000+ pin codes via India Post Speed Post and approved couriers.
Does this work as a tubular battery charger for Exide or Luminous inverter batteries?
Yes — it is a dedicated tubular battery charger. The CC/CV charging profile is safe for all tubular batteries including Exide InvaTubular, Luminous Red Charge, Amaron Inverter, Okaya, and Livguard. Set Boost mode at 6–10A for 100–150Ah tubular batteries; switch to Float when full. Float mode maintains charge indefinitely with no overcharge risk.
Is Cash on Delivery (COD) available across India?
Yes. Cash on Delivery is available across India — pay when the charger arrives at your door. No advance payment needed. We ship to 19,000+ pin codes across every state and union territory. Orders placed before 5PM are dispatched same day from Delhi.
How long does it take to charge a 100Ah or 150Ah tubular inverter battery?
A 100Ah tubular battery (Exide InvaTubular, Luminous Red Charge, Amaron) charges from empty to full in approximately 10–12 hours at 10A. A 150Ah tubular battery takes approximately 14–16 hours at 10A. At the maximum 15A setting, charge times reduce by roughly 30–40%. The digital ammeter shows current tapering toward 0A as the battery nears full charge — that reading is your indicator, not a timer.
Is it safe to leave this charger connected overnight or 24×7?
Yes — in Float mode only. Float mode delivers a low, regulated trickle current that maintains a fully charged battery indefinitely without overcharging. It is designed for 24×7 unattended connection — ideal for DG set starter batteries, inverters, security systems, vehicles in storage, and telecom sites. Do not leave in Boost mode indefinitely; Boost mode is for active charging only.
What is the difference between an SMPS charger and a transformer charger?
An SMPS (Switched Mode Power Supply) charger uses high-frequency switching electronics instead of a heavy iron-core transformer. This makes it significantly lighter, more efficient, and it generates less heat. The SMPS circuit also operates across a wider input voltage range — 160–280V AC — making it suitable for India's fluctuating grid. This Samco charger additionally offers variable current control (0–15A), a Float battery maintainer mode, and a digital ammeter — features absent from most basic transformer chargers.