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KFFKFF 12V 30A DC to DC Battery Charger

KFFKFF 12V 30A DC to DC Battery Charger

4· 5 ratings

Last price we saw

$79.99at Walmart, last seen Oct 31

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Our take on the KFFKFF 12V 30A DC to DC Battery Charger

The KFFKFF SDC-30A is a 12V DC-to-DC charger that takes power from a vehicle's alternator or a generator and pushes up to 30A into an auxiliary 12V battery. It supports lead-acid (flooded, gel, AGM) and lithium chemistries, uses multi-stage charging, and adds a temperature-controlled fan plus over/under-voltage, short-circuit and reverse-polarity protection. It weighs 4.12 lb and is aimed at RV, boat and truck auxiliary-battery setups. No price was provided for this page, so its current standing against its recent range cannot be stated.

Best forRV owners charging a house battery from the alternator while drivingBoat owners maintaining a separate 12V bankTrucks with dual-battery or accessory-battery setupsReviving deeply discharged or long-stored lithium and lead-acid batteries
Pros
  • 30A output is enough to add meaningful charge over a day's drive
  • Works with flooded, gel, AGM and lithium batteries
  • Multi-stage charging with temperature-controlled cooling fan
  • Reverse polarity, over-voltage, under-voltage and short-circuit protection
  • Compact 4.12 lb body fits tight install spaces
Cons
  • No display, so charge status must be read from the battery or a separate monitor
  • No NRTL listing (UL/ETL) shown, which may matter for insurance or marina rules
  • Temperature range tops out at 122 °F, low for engine-bay mounting in hot climates
  • Input and output are both 12V, so it cannot step up from a 24V source
  • Little independent test data available for this brand

KFFKFF 12V 30A DC to DC Battery Charger prices at every store

  • WalmartCheck price at Walmart
  • WalmartCheck price at Walmart

KFFKFF 12V 30A DC to DC Battery Charger price history

Lowest price we've seen: $79.99 on Oct 31 at Walmart. Tracked across 1 store since Oct 31.

What reviewers say

Only a small number of ratings exist (4 out of 5 from 5 ratings), so the picture is thin. Buyers of this class of charger generally value the simple install and steady output, and complain when documentation or labeling is sparse.

Pros
  • Simple two-wire install in compact spaces
  • Steady 30A output on long drives
  • Handles both lead-acid and lithium banks
Cons
  • Sparse manual and labeling
  • No status display
  • Unclear certification for marine use

About the KFFKFF 12V 30A DC to DC Battery Charger

Product Description 12V 30A DC to DC Battery Charger, Dependable Power Solution This versatile battery charger is suitable for both lead-acid and lithium batteries, and can be used with a range of generators, making it perfect for use in RVs and boats. It features intelligent multi-stage charging and comprehensive safety protections to ensure reliable operation in any environment. Designed for easy installation in compact spaces. Rapid Power Replenishment This DC to DC charger utilizes the generator's energy to replenish your RV's auxiliary battery during travel, maintaining a steady power source for the entire trip. All-Encompassing Safety This battery charger is equipped with integrated safety features such as high temperature, short circuit, over voltage, and under voltage protection. It guarantees reliable and consistent performance during your travels, allowing you and your family to have a comfortable holiday. Consistent Functionality The integrated cooling fan adapts to the charger's temperature, maintaining smooth and efficient operation in various conditions without overheating, ensuring reliable performance consistently. Recharge Dormant Batteries This DC to DC battery charger addresses problems with lithium batteries due to excessive discharge or extended storage, revitalizing your battery and preventing premature disposal. Battery Support System This battery charger is crafted to fit snugly into compact spaces, ensuring straightforward installation in your vehicle's confined areas, making it a suitable option for your requirements. Effortless Observation The two-color indicator allows you to effortlessly monitor the charging status, eliminating the need to constantly inspect the charger or battery. Specifications Item Model Number: SDC-30A Input Voltage: 12V Input Battery Voltage Range: DC 8V-16V Charging Current: 30A Charging Voltage Range: 13.2V-14.7V (Lead-acid Battery), 12.6V-14.6V (Lithium Battery) Maximum Output Power: 375W Compatible Battery Type: Lead-acid & Lithium Battery Casing Material: Aluminium Alloy Operational Temperature: 4 °F to 122 °F/–20 °C to 50 °C Net Weight: 2.65 lbs/1.2 kg Package Content 1 x DC to DC Charger 3 x Fuses 1 x User Manual

Specifications

color
BlackSource
Automotive battery charger type
DC-to-DC ChargerSource
Volts
12 VoltsSource
Amps

Questions and answers

Is 30A enough for my RV house battery?
For a typical 100Ah lithium or 200Ah lead-acid bank, 30A is a reasonable charge rate over a day's driving. Larger banks will charge slowly, and you may want a higher-output unit.
Will it charge a lithium battery safely?
Yes, it lists lithium among supported chemistries and uses multi-stage charging. Confirm your battery's BMS accepts a 30A charge and that the charger's absorption voltage matches the battery spec.
Can I use it with a 24V input?
No. Both input and output are 12V, so it is designed for 12V source systems only.
Does it come with mounting hardware and cables?
The listing does not detail box contents beyond the charger itself. Plan on supplying your own fuses, cable and lugs for a proper install.
Is it safe to mount in the engine bay?
Its rated range is –20 °C to 50 °C (4 °F to 122 °F), which is tight for engine-bay heat. A ventilated compartment away from exhaust and direct heat is safer.
When is the price likely to be lowest?
No price was supplied for this page, so no timing guidance can be given. Compare against other 30A DC-to-DC chargers before buying.
What do buyers say about the KFFKFF 12V 30A DC to DC Battery Charger?
Rated 4 out of 5 from 5 ratings.

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30 AmpsSource
Power type
Corded ElectricSource
Display
No DisplaySource
Brand
KFFKFFSource
Weight
4.12 lbSource
Vehicle fitment type
UniversalSource
Vehicle type
BoatSource
Watts
500 WattsSource
Has nrtl listing certification
NSource
Count per pack
1Source
Model
SDC-30ASource
Product Type
Battery Charger
Reverse Polarity Protection
Yes
Compatible Vehicle Type
RVs, boats, trucks
Compatible Voltage
12V
Compatible Battery Type
Agm, Flooded Batteries, Gel, Lead-acid, Lithium
Output Amperage
30A
Battery Type
Agm, Flooded Batteries, Gel, Lead-acid, Lithium
Battery Voltage
12V
Temperature Range
–20 °C to 50 °C, 4 °F to 122 °F
Power Amperage
30A