Description
3-in-1 SOLUTION: Combines charger, tester and maintainer into one intelligent device, saving up to 75% space and boosting efficiency by 80%. Cuts 240 in equipment costs. Outperforms traditional single-use chargers and testers—an investment in faster, smarter and more cost-effective work
BATTERY CHARGING: Smarter than just a Charger, BT521 Equipped with 8-stage smart charging technology to revive deeply discharged batteries down to 2V and restore batteries affected by sulfation or long-term storage. It delivers a stable output with low ripple and minimal heat, which helps reduce wear on the battery and extend its overall lifespan. Restore the old, strengthen the new
BATTERY TESTING: With smart chip and heavy-duty alligator clips for ＞99.6% accuracy. Instantly check battery healyh(SOH), voltage, current, and internal resistance with one easy tap. Minimize false readings, detect issues early, and prevent costly downtime. Take control of battery health—move from reactive fixes to proactive management
BATTERY MAINTENANCE & REPAIR: High-frequency pulses help break down lead sulfate crystals which may restore electrode activity and improve battery capacity by up to 90%. The unique maintenance mode clears buildup during charging to help prevent long-term damage. Regular use can extend battery life 2-3 times and reduce replacement costs
SAFETY PROTECTION: Built-in temperature control chip auto-adjusts charging (-25℃-75℃) to prevent overheating in summer and undercharge in winter, 5-way electrical safeguards and durable flame-retardant design work together to prevent reverse-connection, over-voltage, over-current, short-circuit, overheating, even in harsh conditions
USABILITY: Plug-and-play design eliminates pre-calibration, just connect to power and clamp electrodes for 3-second auto-start. The LCD screen tracks real-time voltage, charging progress, and battery health with intuitive visuals. Streamlined operation meets robust protection, optimizing charging efficiency and extending battery lifespan
COMPATIBILITY: Designed for 12V lead-acid (AGM, Gel, SLA) batteries, including flooded, maintenance-free, deep-cycle, marine batteries; Charges and maintains all types of vehicles, including cars, automobiles, motorcycles, mopeds, lawn mowers, ATVs, UTVs, SUVs, RVs, trailers, boats, classic cars, and more
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