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Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
IMAX B3 AC 10W Compact Balance Charger for 7.4V (2S) and 11.1V (3S) Li-Po Batteries

IMAX B3 AC 10W Compact Balance Charger for 7.4V (2S) and 11.1V (3S) Li-Po Batteries

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ComponentSpecification
Input VoltageAC 100V – 240V, 50/60Hz
Supported BatteryLithium Polymer (Li-Po)
Cell Configuration2-Cell (7.4V) / 3-Cell (11.1V)
Charging Current3 x 800mA (Max Total ~850mA)
Output Power10 Watts
Status Indicators3 x Bicolor LEDs (Red/Green)
Price
₹ 296.61 ₹ 296.61
(Tax included)

Product Description The iMAX B3 AC is a specialized, entry-level balance charger designed specifically for 2S (7.4V) and 3S (11.1V) Lithium Polymer batteries. Unlike standard DC chargers, the B3 features an integrated AC power supply, allowing it to plug directly into a wall outlet without external adapters. It utilizes independent balance ports for each cell, ensuring that every individual cell within the battery pack is charged precisely to 4.2V. This precision balancing is critical for maintaining battery health, preventing cell swelling, and maximizing the performance of your RC models and robotic systems.

Key Features

  • Automatic Balancing: Monitors and charges each cell independently via the balance lead for a perfectly matched pack.

  • Plug-and-Play Simplicity: No buttons or programming required; the charger starts automatically when the balance lead is connected.

  • Dual Compatibility: Features dedicated ports for 3-pin (2S) and 4-pin (3S) JST-XH balance connectors.

  • Visual Status Feedback: Three individual LEDs provide real-time updates (Red: Charging / Green: Full or Standby).

  • Internal Power Supply: Built-in AC transformer supports global voltage standards (100V–240V).

Technical Details

  • Charge Method: CC/CV (Constant Current / Constant Voltage)

  • Connector Type: JST-XH Balance Ports

  • Material: Flame-retardant ABS Plastic

  • Dimensions: 95 mm x 55 mm x 35 mm

  • Weight: Approx. 100g

Prototyping and Engineering Tips from Robogears

  • The Single-Pack Rule: Never attempt to charge a 2S and a 3S battery simultaneously. While there are two ports, the internal logic is designed to manage only one battery pack per charging session.

  • Balance Lead Only: This charger uses only the white JST-XH balance lead for charging. You do not need to connect the main power leads (XT60, Deans, T-connector). If your battery lacks a balance lead, it cannot be used with the B3.

  • LED Troubleshooting: If one LED stays Red while the others turn Green, it indicates a "Cell Imbalance." This usually means one cell in your pack is damaged or has dropped below the safe voltage threshold (typically $<3.0\text{V}$).

  • Safety First: Li-Po batteries are volatile. Always charge them in a Li-Po Safe Charging Bag or on a non-flammable surface. Never leave the charging process unattended, and disconnect the battery as soon as all LEDs turn Green.

Package Includes

  • 1 x iMAX B3 AC Compact Balance Charger

  • 1 x AC Power Cord (Standard 2-pin)

Disclaimer

Images are for reference; casing color or label layout may vary slightly by manufacturer. For use with Li-Po batteries only. Do not attempt to charge Li-ion, Ni-MH, or Lead-Acid batteries with this device.