Description
Efest LUSH Q4 Intelligent LED Battery Charger
A four-bay lithium-ion charger with no buttons, no menus, and no settings to get wrong. Drop your cells in, plug it in, and the Q4 works out the rest.
The LUSH Q4 reads how many bays are occupied and adjusts current automatically — 2.0A for a single cell, 1.0A when two are in, and 0.5A per bay with three or four. That means a fast top-up when you’re in a hurry with one battery, and a gentler, longer-lasting charge when you’re filling the whole tray overnight. Each of the four bays charges and monitors independently, so a tired cell in slot one won’t drag down a fresh one in slot four.
The build is where the Q4 earns its keep. Piano-wire springs slide smoothly instead of fighting you, and low-resistance steel cathodes with hard chromium plating hold a more precise charging voltage than the stamped contacts you’ll find in bargain chargers. Efest rates the springs to over 15,000 cycles. If you’re running an external-battery mod, this is the charger that stops you from cooking cells on a cheap USB dock.
Features:
Four independent charging bays with individual monitoring
Automatic current selection — 2.0A (1 cell) · 1.0A (2 cells) · 0.5A (3 or 4 cells)
No-button design — nothing to configure, nothing to set wrong
LED indicators show charging status per bay and turn green at full charge
Auto-stop at full charge, auto-recharge if a cell drops below 4.05V
Revives over-discharged cells sitting at 0.6V or higher
Four-way protection: over-discharge, over-voltage, short circuit, reverse polarity
Piano-wire springs rated past 15,000 cycles
Low-resistance steel cathodes with hard chromium plating for accurate charge voltage
Fire-retardant housing
Compatible Battery Sizes:
10440 · 14500 · 14650 · 16340 · 16650 · 17650 · 17670 · 18350 · 18490 · 18500 · 18650 · 20700 · 22650 · 26500 · 26650
For 3.6V / 3.7V rechargeable lithium-ion and IMR cells. Flat top and button top both seat correctly.
Specifications:
Bays: 4, independently monitored
AC Input: 100–240V, 50/60Hz
Charge Current: 2.0A × 1 · 1.0A × 2 · 0.5A × 3 or 4 (±10%)
Auto Cut-Off Voltage: 4.20V ± 0.05V
Auto-Recharge Threshold: 4.10V ± 0.10V
CV Cut-Off Current: less than 10% of max
Standby Current: under 10.0mA
Activation Current: 10mA–50mA
Battery Chemistry: Li-ion / IMR, 3.6V–3.7V
Operating Temperature: 0°C to 40°C
Storage Temperature: -40°C to +70°C
Indicator: LED per bay (no display screen)
Package Contents:
1x Efest LUSH Q4 Intelligent LED Charger
1x AC Power Cable
1x User Manual
Shop Compatible Batteries:
Efest Purple IMR18650 3000mAh 35A – Flat Top
Efest Purple IMR 21700 3700mAh 35A – Flat Top
Efest Purple IMR26650 4200mAh 50A – Flat Top
