12V 15A SMPS Battery Charger — Automatic, for Inverter & Tubular Batteries

An SMPS (switched-mode power supply) battery charger regulates its output using high-frequency switching instead of a heavy iron-core transformer. That makes it lighter to carry and mount, while keeping the charging current steady. This Samco Battery model pairs SMPS regulation with automatic current control — the charger supplies what the battery’s condition calls for — and a live digital ammeter, so you can see the exact current the battery is drawing.

You don’t set amps; the charger does. It supplies what the battery’s condition calls for — more for a discharged battery, less as it fills — and the digital ammeter shows the draw live. The knob only sets how strong the charge may become: start near Minimum, step up towards Maximum, keeping the current within what your battery maker specifies (about 10% of Ah capacity is a common reference — roughly 15A for a 150Ah tubular battery).

Normal mode is for VRLA batteries and routine maintenance charging. Fast mode is for weak, sulphated or deeply discharged batteries that will not accept a normal charge — and it is very useful for flooded batteries, because the stronger charge moves and mixes the electrolyte. Acid is heavy and settles at the bottom of the cell while water stays on top; Fast charging mixes them so there is no acid stratification. Flip the switch left for Normal, right for Fast.

The primary recommended range is 100Ah to 180Ah: tubular and flat-plate inverter banks, solar storage and larger tractor batteries. Lower-capacity batteries from 35Ah to 99Ah — smaller tractor, DG-set and workshop batteries — are suitable only with the knob at the lower steps, keeping the current within the battery manufacturer’s specification. A smaller battery is not automatically suitable just because it falls inside the range.

Yes. Any brand of 12V lead-acid tubular battery between 100Ah and 180Ah — including the batteries supplied with Luminous, Microtek and other home inverters. Turn the knob towards Maximum and watch the ammeter: per the common 10%-of-capacity guideline, the draw on a 150Ah battery will sit around 15A. The charger connects to the battery terminals, so the inverter brand does not matter.

Technically yes, with the knob at its lowest steps, keeping within the current the battery maker specifies. But for a typical 35 to 100Ah car battery the Samco Battery 12V 6A charger is the closer match and the better buy. This 15 amp model earns its price on larger inverter, tubular and solar banks.

For most homes and workshops, SMPS. A transformer (iron-core) charger is heavier and regulates current less tightly; an SMPS charger is lighter, holds the charging current more precisely and wastes less power as heat. Transformer units still suit rough site use where weight does not matter — Samco Battery builds both types in Delhi.

No. It charges automatically — the current tapers as the battery fills — but there is no Float stage, so disconnect it once the battery is charged rather than leaving it connected indefinitely. For a standby bank that stays wired between power cuts, use the 12V 20A FCBC inverter charger.

Tubular, flat plate, SMF, VRLA and AGM types are supported — use Normal mode for VRLA and sealed batteries. GEL specifies lower charging voltages than flooded cells, so confirm the figures with Samco Battery before charging one. It is not intended for lithium-ion or LiFePO₄ packs.

Divide the amp-hours you need to replace by the charging current shown on the ammeter, then add roughly a fifth for the final stage, where the current tapers as the battery fills. A 150Ah bank that is half discharged needs about 75Ah, so around six hours at 15A in practice. Actual time varies with depth of discharge, battery age, condition and temperature.

Yes. Free delivery in every city of Delhi NCR and free shipping to 19,000+ Indian pincodes in 3–7 working days, with COD and UPI accepted everywhere. Order on WhatsApp or call 99539 35912.

Samco Battery is at 21 Gokhale Market, near Kashmere Gate Metro Station, Delhi – 110054, India — open Monday to Saturday, 11 AM to 5 PM. We deliver free to every Delhi NCR city and ship across India, or you can visit the counter during shop hours.

Six months against manufacturing defects, and a 3-day return window on unopened goods in original packaging, with return shipping paid by the customer. Full terms are on the warranty and returns page.

Yes. Dealer and wholesale rates are available for battery shops, inverter dealers, solar installers and resellers in Delhi NCR and across India. Send your quantity on WhatsApp or call 99539 35912 for a trade quote.