For 200a lithium with 50%. How long does it take full charge?

As a base line it is pure math. If you have a 200 AH battery that is half charged it will take 100 AH worth of charging to bring it up to full. This charger has a max 20A rating so 100 AH divided by 20 A = 5 hours. Since nothing works at 100% efficiency and since the charge rate is variable you should add 10% - 20% in charge time, or up to 1 additional hour. Call it 5 to 6 hours to charge your 50% depleted battery. That is not only true for this charger but virtually ALL chargers / charge rates. Do the math for a 5 Amp charger or for a 40 Amp charger. The formula is the same.

You mentioned that after a lifepo4 charge, there will be a power failure!’… Can you please explain what is the “failure”?

Hello, friend. For example, the P20 Smart Battery Charger normally charges the 12V Lifepo4 Battery to 14.6V and automatically stops working, because the measured Battery characteristics may be about 14.3V, which is considered normal if it is lower.

Can this item be used to recharge the gel batteries for my electric scooter?

Hello! Yes, smart chargers. Lithium, Lifepo4, Lead acid (AGM/Gel/SLA..) Battery charger, trickle charger. Adjustable current, optional battery type.

I have been leaving a 12v 100ah deep cycle battery agm fir 3 days straight on pulse/repair mode. how long should the charger take?

no longer than 12 hours i would try another charger. if it works then your 1st charger is bad

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🔌 Charge smarter, drive farther — never get left behind!

SMART BATTERY TLC - Intelligent CPU auto-detects battery type & status, optimizing charge without damage.
EFFORTLESS MONITORING - Clear LCD display tracks charging progress & battery health in real-time.
BUILT TO LAST PROTECT - Durable ABS flame-retardant shell with multi-layered safety features for worry-free use.
POWER PACKED VERSATILITY - Seamlessly charges 12V & 24V batteries across cars, boats, motorcycles & more.
ONE BUTTON BATTERY REVIVAL - Pulse repair function extends battery life, keeping your ride ready for the long haul.

The 20-Amp Smart Battery Charger delivers ultra-fast, intelligent charging for 12V and 24V batteries including Lithium, LiFePO4, and various Lead-Acid types. Featuring automatic battery detection, multi-stage charging, and advanced safety protections housed in a durable flame-retardant shell, it’s designed for cars, boats, motorcycles, and more. With a one-button pulse repair function and real-time LCD monitoring, it ensures your batteries stay healthy and ready, making it an essential tool for any modern vehicle owner.

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€ 124.95

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Brand	RCGCBC
Manufacturer	HTRC-RC
Model	20A
Product Dimensions	16 x 8.99 x 5 cm; 470 g
Item model number	20A
Number of items	1
Batteries Included	No
Batteries Required	No
Battery cell composition	Lithium
Includes Rechargeable Battery	No
Manufacturer	HTRC-RC
Item Weight	470 g

20-Amp Smart Battery Charger,12V/20A and 24V/10A.Lithium,Lifepo4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/Pulse Repair Charger,for Car ,Boat,Motorcycle, Lawn Mower

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