Can I use it as a drop-in replacement for lead-acid batteries?

Yes, it is a 24V deep-cycle pack meant for 24V systems such as trolling motors, RVs and golf carts. Check that your charger has a lithium LiFePO4 profile, since lead-acid chargers can stop short of a full charge.

How many units can I link together?

The battery is designed to expand into a larger bank, and the maker cites a total capacity of 20.48 kWh. That works out to eight 100Ah units in a 24V configuration, so plan cabling and fusing for the full bank.

What does the Bluetooth app actually show?

It reports voltage, current and charging status in real time from the BMS. It does not control the battery; it is a monitoring tool.

Is it safe to charge in cold weather?

LiFePO4 cells should not be charged below freezing. The listing does not state a low-temperature charge cutoff, so confirm with the seller before winter use or keep the battery above freezing while charging.

The battery itself with its dual-sided handles is the core item. Confirm with the seller whether terminal bolts and a user guide are included before you install it.

KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth

Best price now

$411.99at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth

Best price now

$411.99at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $411.99 at Walmart on Nov 12.

Our take on the KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth

The KFFKFF 24V 100Ah is a lithium iron phosphate deep-cycle battery with built-in Bluetooth monitoring and an integrated BMS. It is aimed at RV, boat, golf cart, trolling motor and off-grid solar setups, and it can be linked with more units to build a larger bank. Its main draw is app-based visibility of voltage, current and charge state, which many budget LiFePO4 packs lack. Against premium brands it trades polish and a long track record for a simpler feature set, and buyers should weigh that against the warranty and support of established makers.

Best forRV and camper house powerTrolling motor and 24V marine useOff-grid solar storageGolf cart replacement packs

Pros

Bluetooth app shows voltage, current and charge status in real time
Integrated BMS guards against overcharge and over-discharge
Expandable to a larger bank by adding units
Rated for over 4000 charge cycles
Dual-sided handles make it easier to lift and move
Plastic casing adds insulation against shorts

Cons

Heavier and bulkier than smaller 12V packs, so lifting takes care
Bluetooth range and app quality are the usual weak points on budget lithium brands
No cold-weather charging cutoff details are spelled out
Brand support and warranty depth trail established battery makers

KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth prices at every store

WalmartNew
In stockSold by KFFKFF Tools & Hardware USReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$411.99Free shippingChecked Nov 12
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About the KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth

This 24V LiFePO4 (lithium iron phosphate) deep cycle battery has a capacity of 100 Ah (2560 Wh). It is rated for over 4000 charge cycles. It suits RVs, boats, golf carts, trolling motors, solar setups, home backup power and off-grid energy storage.

An integrated 100A battery management system (BMS) protects against overcharging, over-discharging, short circuits, excessive current and extreme temperatures. Bluetooth connects the battery to a smart app that shows voltage, current and charging status in real time.

The casing is plastic, which insulates against short circuits and electric shock. A handle on each side makes it easier to carry. Units can be added or removed to change the setup, up to a total capacity of 20.48 kWh.

Model: HD24100LY-24
Battery type: LiFePO4 (lithium iron phosphate)
Voltage: 25.6V
Capacity: 100 Ah, 2560 Wh
Output voltage: 29.2–20V DC
BMS: Intelligent 100A battery management system
Cycle life: Over 4000 charge cycles
Expandability: Up to 20.48 kWh total capacity
Connectivity: Bluetooth, with smart app monitoring
Material: Plastic shell
Color: Multicolor
In the box: 1 x 24V LiFePO4 lithium battery, 1 x user manual

Specifications

color: MulticolorSource

Questions and answers

Can I use it as a drop-in replacement for lead-acid batteries?: Yes, it is a 24V deep-cycle pack meant for 24V systems such as trolling motors, RVs and golf carts. Check that your charger has a lithium LiFePO4 profile, since lead-acid chargers can stop short of a full charge.
How many units can I link together?: The battery is designed to expand into a larger bank, and the maker cites a total capacity of 20.48 kWh. That works out to eight 100Ah units in a 24V configuration, so plan cabling and fusing for the full bank.
What does the Bluetooth app actually show?: It reports voltage, current and charging status in real time from the BMS. It does not control the battery; it is a monitoring tool.
Is it safe to charge in cold weather?: LiFePO4 cells should not be charged below freezing. The listing does not state a low-temperature charge cutoff, so confirm with the seller before winter use or keep the battery above freezing while charging.
What is in the box?: The battery itself with its dual-sided handles is the core item. Confirm with the seller whether terminal bolts and a user guide are included before you install it.
Where is the KFFKFF 24V 100Ah LiFePO4 Lithium Battery with Bluetooth cheapest?: At Walmart, for $411.99, as of our latest check.