AIYONFEI Car Battery Charger 15A 12V/24V Smart 9-Stage Fast Charge & Desulfator

The AIYONFEI 15-Amp Car Battery Charger is a smart 12V/24V all-in-one charger, maintainer, trickle charger and desulfator designed to fast-charge, repair and preserve a wide range of lead-based and LiFePO4 batteries.

This compact, microprocessor-controlled unit adjusts charging behavior for cars, trucks, motorcycles, boats and seasonal equipment. It supports both 12V and 24V systems, provides temperature compensation, and offers a 9-stage algorithm that balances speed with long-term battery health. Color LEDs show voltage, current and operational mode so you always know what stage the charger is in.

How quickly will this charger restore a depleted battery?

The AIYONFEI charger delivers up to 15 amps on 12V batteries and 8 amps on 24V batteries, enabling significantly faster replenishment than small trickle chargers. The integrated 9-stage smart program ramps current appropriately to avoid overheating while maximizing recharge speed.

• 15A fast-charge output for 12V batteries, 8A for 24V systems
• 9-stage charging optimizes current and float stages
• 65% faster charging compared to many basic chargers
• LED display shows real-time voltage and charging current

Can it repair or maintain an older or sulfated battery?

Yes — the unit includes a maintenance/desulfation mode that uses pulse technology to break down sulfate buildup and revive weakened cells when possible. It can extend usable life for many lead-acid batteries, though it cannot revive completely zero-volt or unsupported lithium chemistries.

• Pulsed repair/desulfation mode for lead-acid types
• Minimum detectable voltage 0.3V — will not activate at 0V
• Not compatible with NCM/NCA, LCO, LMO, or LTO lithium types
• Suitable for LiFePO4, AGM, GEL, EFB, VRLA and flooded batteries

Is it safe to leave connected for long-term maintenance?

The charger is built for extended service and long-term maintenance with protective features to prevent overcharge, reverse polarity, sparks and short circuits. For seasonal vehicles or stored equipment, use the TKL maintenance mode to keep batteries healthy without overcycling.

• TKL mode for long-term maintenance of standby batteries
• Reverse polarity, overvoltage and short-circuit protection
• Automatic winter/summer temperature compensation for safe charging
• Memory function restores last selected mode after power loss

What batteries and conditions should I check before using this charger?

Confirm your battery chemistry and capacity before connecting: the charger supports 12V 2–200Ah and 24V 2–100Ah ranges and excludes several lithium chemistries. Also ensure you have mains power available and that the battery indicator registers before attempting to charge.

• Compatible capacities: 12V 2–200Ah, 24V 2–100Ah
• Supported chemistries include LiFePO4 and multiple lead-acid types
• Requires mains power; input cable ~150cm, output ~90cm
• Display flashes empty icon if no battery is detected

Who is this for: The AIYONFEI 15A charger is ideal for vehicle owners, small fleet operators, marine and powersports enthusiasts, and anyone who needs a versatile charger that can fast-charge, maintain and attempt repair on common battery types. Choose this unit if you want faster top-up times than a simple tender, clear status feedback while charging, and protective features for safe long-term connection.