12V 3A Automatic Bike Battery Charger

The charger automatically cuts off at 14.6V — a charging/absorption voltage used for many 12V lead-acid batteries. Once the battery reaches 14.6V, the charger stops. Reverse polarity, short circuit, and overload protection are also active throughout. Even so, Samco recommends charging where you can check on the unit periodically, and following the charging guidance supplied by your battery manufacturer.

A 12V lead-acid battery — including sealed (SLA), valve-regulated (VRLA), and maintenance-free (MF) types — is considered fully charged at 14.4V to 14.6V under charge (absorption voltage). At rest after charging, it settles to approximately 12.6V to 12.8V. The Samco 3 Amp charger cuts off at 14.6V, a charging/absorption voltage used for many 12V lead-acid batteries. Exact charging voltage depends on battery design, temperature and the manufacturer’s specification.

From a deep discharge and under suitable conditions, a 12V 7Ah battery may take roughly 3 hours at 3 amps, a 12Ah battery roughly 4–5 hours, and a 26Ah battery roughly 9–11 hours. As a rough guide, capacity in Ah ÷ charging current × 1.2 gives an approximate figure. Treat these as estimates only — actual time varies with depth of discharge, battery age and condition, temperature, and how much current the battery will accept. A partially discharged battery takes proportionally less.

Most 12V motorcycles and scooters running a compatible 4Ah–14Ah lead-acid or MF battery — Honda Activa, Dio, Shine · Hero Splendor, HF Deluxe, CD 110 · Bajaj Pulsar · TVS Jupiter, Apache · Suzuki Access · Royal Enfield · Yamaha and similar models. Check your battery’s rating and terminal type before ordering. More broadly, the charger suits 4Ah–30Ah batteries — covering bike batteries, CCTV and security backup batteries (7Ah–26Ah), and zataka/spray pump batteries. For batteries larger than 30Ah, such as inverter batteries, a higher-amperage charger such as the 12V 20A inverter battery charger is recommended. The battery charger shopping guide explains how to match charger amps to battery Ah.

SMPS chargers use CC-CV (constant-current/constant-voltage) charging with automatic cut-off at a set voltage. Transformer chargers push a fixed unregulated current until manually disconnected — leaving one connected overnight on a full battery causes overcharging, electrolyte loss, plate warping, and in rare cases, thermal runaway. SMPS chargers also run cooler (85–92% efficiency vs 60–70%) and tolerate input voltage fluctuations (160–280V) that may damage older transformer-based units.

Samco Battery ships from its store at 21 Gokhale Market, Delhi — 110054, with same-day dispatch for orders placed before 3 PM. Samco delivers to all 28 states and 8 union territories of India via India Post Speed Post and Trackon Courier, covering 19,000+ pincodes. Delivery takes 2–3 days for Delhi NCR, 3–5 days for most of India, and up to 7 days for remote and northeastern areas. COD and UPI accepted.

Rs 993, all taxes included, free shipping pan India. Order by calling or messaging on WhatsApp at 99539 35912 — Samco confirms availability, takes your address, and dispatches same day from Delhi. Dealer and wholesale pricing is also available; Samco has supplied dealers, garages, and workshops across India since 2000 and offers volume discounts for regular and large-quantity orders.

Yes, within its 4Ah–30Ah range. It works as a 12V car battery charger for car batteries up to 30Ah; most current hatchbacks (Alto, WagonR, Santro, i10) ship with 32Ah–35Ah batteries — for those, the Samco 12V 6 Amp charger (car batteries 35Ah–100Ah) is the right tool. For CCTV, fire alarm, and security panels, it handles 12V SLA/VRLA batteries in the 7Ah–26Ah range. All SLA, VRLA, and MF chemistries charge safely to 14.6V cutoff. For inverter use, it suits small UPS and solar backup batteries (7Ah–30Ah) only — not large 60Ah–200Ah home inverter batteries, which need a 10A–20A charger.