YHCHKJ Smart Battery Charger 35A 12V/24V — Pulse Repair & LCD Maintenance Mode

YHCHKJ 35A Smart Battery Charger is a compact, multi-mode charger and maintainer for 12V/24V Lithium, LiFePO4, AGM and lead-acid batteries with pulse repair and adjustable charging currents up to 35A.

This intelligent charger balances fast charging, long-term maintenance and safety protections in one unit. Built-in temperature compensation, reverse-polarity protection and a clear LCD make it suitable for workshop use, seasonal storage or on-board charging for boats and RVs. It is designed to revive weakened batteries, support deep-cycle applications and maintain stored batteries without overcharging.

How quickly will this charger bring my battery back to usable charge?

The unit offers high-current options to shorten charge time for larger battery banks: up to 35A for 12V systems and 18A for 24V systems. Selectable output levels let you trade speed for battery longevity depending on need.

• 12V selectable currents: 10A, 20A, 35A for faster replenishment.
• 24V selectable currents: 5A, 10A, 18A for two-battery systems.
• Smart voltage regulation to reduce risk of overcharge during high-current cycles.

Can it safely maintain batteries through off-seasons or long storage?

Yes — the charger includes a trickle/maintenance mode that tops off batteries without continuously stressing them. Temperature compensation and multiple protections make it suitable for winter storage and long-term maintenance tasks.

• Maintenance (trickle) mode prevents overcharging during long storage periods.
• Temperature compensation adjusts charging behavior in hot or cold conditions.
• Protections: reverse connection, short-circuit, overcurrent and overheating safeguards.

Will this work with different battery chemistries and damaged batteries?

The charger is compatible with lithium-based cells (including LiFePO4), traditional lead-acid types like AGM and gel, and deep-cycle marine or RV batteries. A pulse-repair function attempts to recover sulfated lead-acid batteries, improving usability when possible.

• Chemistry modes include Lithium/LiFePO4, AGM, Gel and standard lead-acid.
• Pulse repair helps desulfate and restore degraded lead-acid batteries.
• Minimum start voltage 2V — not intended as a jump starter for a completely dead vehicle battery.

How do I operate the charger and monitor progress?

Operation is straightforward: plug in, select battery type and the desired current, then start. The LCD displays charging voltage, current, percentage progress and internal temperature so you can monitor status at a glance.

• One-button start streamlines charging setup for busy garages or marinas.
• Clear LCD shows charge stage, current, voltage and temperature readings.
• Integrated cooling and fire-retardant materials increase safety during long charges.

Who this is for: The YHCHKJ 35A Smart Battery Charger suits DIY mechanics, boat owners, RV enthusiasts and anyone who stores seasonal vehicles or equipment. It’s aimed at people who need a flexible charger that can fast-charge large battery banks, keep batteries healthy over months of inactivity, and offer protections for mixed usage scenarios. Note: always confirm battery voltage before use and remember this unit does not function as a jump starter for starting engines.