✅ What is it The iMax B3 Pro is a compact balance charger designed to charge 2-cell or 3-cell LiPo / Li-Ion battery packs. It includes balance ports so each cell in the pack gets charged fairly, which is important for safety and longevity. Electra Traders +3 valuehobby.com +3 images-eu.ssl-images-amazon.com +3 📊 Specifications & Features Here are its main specs, with explanations: Specification Value What it means / Why it matters Battery Types Supported LiPo / Li-Ion, 2S-3S (i.e. 2 or 3 cells in series) Out of Darts +2 images-eu.ssl-images-amazon.com +2 It can charge packs whose nominal voltage is about 7.4V (2S) or 11.1V (3S). Input Voltage ~110-240V AC mains power. valuehobby.com +2 quarkmine.com +2 It works directly off wall outlets in many countries without needing an external transformer. Balance Charge Current / Per Cell ~850mA per cell (balance circuit). valuehobby.com +2 Udvabony +2 That’s the rate at which the charger equalizes the cells. Good for smaller/medium packs. Max Charging Current 3 × ~700-850mA (depending on version / cell count) images-eu.ssl-images-amazon.com +2 valuehobby.com +2 This is how fast it can push current into the pack; not very high, so charging will take some time for bigger batteries. Display / Indicators 3 bicolor (red/green) LEDs, one per cell, to show charging status. valuehobby.com +2 images-eu.ssl-images-amazon.com +2 Helps you see when each cell is fully charged. Size & Weight Approx. 90-100 mm × 55-60 mm × 35 mm, ~180 g. valuehobby.com +2 Out of Darts +2 Fairly small and lightweight; portable for hobby use. Case / Build Plastic enclosure; internal AC-switching power supply. Includes built-in balance port(s). Udvabony +2 valuehobby.com +2 Plastic build means it’s light and inexpensive, but you need to handle it carefully (heat, moisture). ⚙ How it Works & How to Use It Here’s a rough step-by-step of how to use the B3 Pro charger properly: Connect to power: Plug in the charger into an AC outlet (110-240V). Wait until the LEDs show that the charger is ready (usually they turn some initial color). images-eu.ssl-images-amazon.com +1 Connect the battery: Use the balance plug on your 2S or 3S battery pack. The charger must have the correct balance connector (commonly JST-XH). valuehobby.com +1 Charging starts: After connecting, the charger detects the cell count (2 or 3) and begins charging. The LEDs corresponding to each cell will light up (often red). valuehobby.com +1 Balancing & finishing: As each cell reaches full voltage, its LED will turn green. When all cell LEDs are green, the charging (and balancing) is done. Disconnect the battery. images-eu.ssl-images-amazon.com +1 ⚠ Safety & Important Usage Notes Always use the balance port. Do not try to bypass the balance circuit. Never leave charging LiPo/Li-Ion packs unattended. Ensure the battery isn’t damaged, puffed, or bulging before charging. Use the correct cell count (2S or 3S). If you connect a cell with higher voltage or the wrong connection, it could damage the battery or charger. Keep the charger on a non-flammable surface, away from heat, direct sunlight, moisture. After charging, unplug and store batteries properly (half-charged/storage voltage if not using immediately).