Can it run a 1000W inverter?

A 1000W inverter pulls roughly 85-90A at 12V, which is inside the 100A BMS limit but leaves little headroom for surge. Size the load so continuous draw stays well under 100A.

How long does it take to charge?

With the recommended 14.6V 20A lithium charger it takes about 5 hours from empty. Solar charging depends on panel wattage and the controller.

Does it fit a Group 31 tray?

Yes. At 12.9 x 6.69 x 8.5 inches it is sized for a BCI Group 31 battery box. Measure your tray and hold-down before buying.

Can I charge it in freezing weather?

The listing does not state a low-temperature charge cutoff. LiFePO4 cells should not be charged below 0°C, so stop charging in freezing conditions unless you confirm cold-weather protection.

Is it a drop-in replacement for my lead-acid battery?

It fits Group 31 spaces and is much lighter, but you need a lithium-compatible charger or charge profile. A standard lead-acid charger may not fully charge it.

Where is the Kingboss 12V 100Ah LiFePO4 Battery cheapest?

At Walmart, for $132.80, as of our latest check.

Where can I buy the Kingboss 12V 100Ah LiFePO4 Battery?

2 stores we checked sell it, including Walmart, Amazon.

Kingboss 12V 100Ah LiFePO4 Battery

Best price now

$132.80at WalmartChecked Nov 12

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

Kingboss 12V 100Ah LiFePO4 Battery

Best price now

$132.80at WalmartChecked Nov 12

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $132.80 at Walmart on Nov 12.
Checked at 2 stores.

Our take on the Kingboss 12V 100Ah LiFePO4 Battery

The Kingboss 12V 100Ah LiFePO4 battery is a deep-cycle lithium battery with a built-in 100A BMS that guards against overcharge, over-discharge, over-current, overheating and short circuits. It fits a BCI Group 31 box at 12.9 x 6.69 x 8.5 inches and weighs about 60% less than a comparable lead-acid battery, with no acid refills or watering. It charges from a 14.6V 20A lithium charger in about 5 hours, from a solar panel with controller, or from an alternator. It suits RV, solar, off-grid and mobility-scooter setups where weight and maintenance matter; against premium lithium rivals it is a budget option, so check the BMS current rating and cold-weather charging limits before you commit.

Best forRV and camper house batteriesOff-grid solar storageMobility scooters and electric cartsOwners replacing a Group 31 lead-acid battery

Pros

Built-in 100A BMS protects against overcharge, over-discharge, over-current, overheating and shorts
About 60% lighter than a comparable lead-acid battery
Fits a BCI Group 31 battery box
No acid refilling or regular maintenance
Charges from a lithium charger, solar with controller, or an alternator

Cons

BMS is rated 100A, so it limits how large an inverter or load it can feed
No low-temperature charging cutoff is stated, so charging below freezing is a risk
No Bluetooth monitoring or app
Budget brand with a thinner support and warranty track record than premium lithium makers

Kingboss 12V 100Ah LiFePO4 Battery prices at every store

WalmartNew
In stockSold by HIGHWAY PROMO INCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$132.80Free shippingChecked Nov 12
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AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$145.89Free shippingChecked Nov 12
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Kingboss 12V 100Ah LiFePO4 Battery price history

Lowest price we've seen: $145.89 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.

About the Kingboss 12V 100Ah LiFePO4 Battery

This is a 12V, 100Ah lithium iron phosphate (LiFePO4) battery with a built-in 100A battery management system (BMS). The BMS protects against overcharging, over-discharging, over-current, overheating and short circuits.

The battery measures 12.9 x 6.69 x 8.5 inches and fits a BCI Group 31 battery box. It is 60% lighter than comparable lead-acid batteries. It needs no acid refilling or frequent maintenance.

It can be recharged with a lithium iron phosphate battery charger, a solar panel with a controller, or an alternator. It is used in RVs, solar systems, household battery setups, off-grid systems, electric scooters and electric handicap equipment.

Voltage: 12V
Capacity: 100Ah
Chemistry: Lithium iron phosphate (LiFePO4)
BMS: Built-in 100A
Protection: Overcharge, over-discharge, over-current, overheating, short circuit
Dimensions: 12.9 x 6.69 x 8.5 inches
Battery box fit: BCI Group 31
Weight: 60% lighter than comparable lead-acid batteries
Charging: LiFePO4 charger, solar panel with controller, or alternator
Recommended charger: 14.6V 20A, about 5 hours fast charge
Uses: RV, solar, household battery, off-grid, electric scooter, electric handicap equipment

Specifications

color: AssortedSource

Questions and answers

Can it run a 1000W inverter?: A 1000W inverter pulls roughly 85-90A at 12V, which is inside the 100A BMS limit but leaves little headroom for surge. Size the load so continuous draw stays well under 100A.
How long does it take to charge?: With the recommended 14.6V 20A lithium charger it takes about 5 hours from empty. Solar charging depends on panel wattage and the controller.
Does it fit a Group 31 tray?: Yes. At 12.9 x 6.69 x 8.5 inches it is sized for a BCI Group 31 battery box. Measure your tray and hold-down before buying.
Can I charge it in freezing weather?: The listing does not state a low-temperature charge cutoff. LiFePO4 cells should not be charged below 0°C, so stop charging in freezing conditions unless you confirm cold-weather protection.
Is it a drop-in replacement for my lead-acid battery?: It fits Group 31 spaces and is much lighter, but you need a lithium-compatible charger or charge profile. A standard lead-acid charger may not fully charge it.
Where is the Kingboss 12V 100Ah LiFePO4 Battery cheapest?: At Walmart, for $132.80, as of our latest check.
Where can I buy the Kingboss 12V 100Ah LiFePO4 Battery?: 2 stores we checked sell it, including Walmart, Amazon.