E-FAST
E-FAST 20A Smart Car Battery Charger, 12V 24V Maintainer & Desulfator -...
7.8/10
● In StockCategory: Automotive > Tools & Equipment > Jump Starters, Battery Chargers & Portable Power > Battery Chargers
View on AmazonHighlights
- 20A High-power charging for 12V & 24V: Experience the speed of 20 Amps. Delivers a robust 20A output for 12V batteries and 10A for 24V batteries, fully charging a 100Ah battery in roughly 5-6 hours—twice as fast as standard 10A chargers. Ideal for large capacity batteries (up to 300AH) found in Trucks, RVs, Boats, and Agricultural Vehicles.
- Optimised for LiFePO4 & Lead-acid: One charger handles them all. Engineered with specific algorithms for LiFePO4 Lithium batteries and all 12V/24V Lead-Acid types including AGM, GEL, SLA, Wet, and Deep Cycle batteries. Whether maintaining a lithium battery in your camper or a standard battery in your pickup truck, it ensures a safe and full charge.
- 7-stage smart charging & Auto-memory: Features a microprocessor-controlled 7-stage charging process that automatically diagnoses, charges, and maintains your battery to maximize its lifespan. The built-in Auto-Memory function remembers your last selected mode, so it automatically resumes charging the same way if power is interrupted or when you plug it in next time.
- Pulse Repair & Desulfation: Revitalize your battery. The dedicated Repair Mode (16-hour cycle) uses advanced pulse technology to help break down sulfation crystals on battery plates. It is designed to recover old, idle, or stratified lead-acid batteries and restore their capacity, saving you the cost of premature battery replacement.
- Smart protection & Active cooling: Built for worry-free operation 24/7. The system includes comprehensive protection against reverse polarity, short circuits, over-charging, and over-temperature. Equipped with a built-in cooling fan to effectively dissipate heat during high-amp (20A) operation, ensuring the device stays cool and efficient.
Product Overview
Key Features
- 20A High-Power Charging: Delivers 20A for 12V batteries and 10A for 24V batteries, fully charging a 100Ah battery in just 5–6 hours and supporting capacities up to 300Ah.
- Multi-Battery Compatibility: Supports LiFePO4 lithium and all major lead-acid types including AGM, GEL, SLA, Wet, and Deep Cycle batteries with dedicated charging algorithms for each.
- 7-Stage Smart Charging with Auto-Memory: A microprocessor-controlled charging process automatically diagnoses and maintains batteries, while the Auto-Memory function resumes your last selected mode after any power interruption.
- Pulse Repair & Desulfation Mode: A dedicated 16-hour repair cycle uses pulse technology to break down sulfation crystals, helping to recover and restore the capacity of old or idle lead-acid batteries.
- Smart Protection & Active Cooling: Comprehensive safeguards against reverse polarity, short circuits, overcharging, and overheating are backed by a built-in cooling fan for safe 24/7 operation.
Pros
- Impressively fast charging speed at 20A makes it a significant time-saver over standard 10A chargers for large batteries
- Excellent versatility with support for both lithium and multiple lead-acid battery chemistries in one device
- The desulfation and repair mode adds real long-term value by potentially extending battery life and avoiding costly replacements
Cons
- The built-in cooling fan, while necessary, may produce noticeable noise during high-amperage charging sessions
- The 16-hour repair cycle is quite lengthy, which may be inconvenient for users needing a quick battery turnaround
Verdict: The E-FAST 20A Smart Car Battery Charger is a powerful and highly versatile option that punches well above its price point, offering fast charging, broad battery compatibility, and a genuinely useful repair mode. It's an excellent investment for anyone managing large-capacity batteries in trucks, RVs, boats, or agricultural vehicles who wants a reliable all-in-one charging solution.
Photos
Product Specs
| Specification | Details |
|---|---|
| Output Voltage | 12 Volts, 24 Volts |
| Input Voltage | 110 Volts |
| Battery Charge Time | 5 Hours |
| Current Rating | 20 Amps |
| Amperage | 20 Amps |
| Connector Type Used on Cable | BATTERY_CLAMP |
| Number of Ports | 1 |
| Item Dimensions D x W x H | 7.5"D x 3.7"W x 4.9"H |
| Item Weight | 2.3 Pounds |
| Color | yellow |
| Brand | E-FAST |
| Mfr Part Number | TK1200 |
| Manufacturer | EFAST |
| Model Number | TK2500 |
| Warranty Description | 1 YEARS |
| ASIN | B0G1YH6QFQ |
| Specification Met | UL |
| Product Dimensions | 7.5"D x 3.7"W x 4.9"H |
