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Deal.ai › K2 › Batteries & Chargers
K2
K2 Energy LiFePO4 Battery 12.8 V 100 Ah

K2 Energy LiFePO4 Battery 12.8 V 100 Ah

Best price now

$399.99at CampingworldChecked Nov 12

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $399.99 at Campingworld on Nov 12.

Our take on the K2 Energy LiFePO4 Battery 12.8 V 100 Ah

The K2 Energy LiFePO4 Battery is a 12.8 V, 100 Ah lithium iron phosphate battery with built-in Bluetooth for monitoring state of charge and cell data from a phone. It stores roughly 1.28 kWh, which suits solar storage, trolling motors, RVs and off-grid setups. Against lead-acid rivals it is lighter and delivers far more usable capacity, and against many lithium rivals the Bluetooth monitoring is the differentiator. It is a drop-in upgrade for anyone replacing a group-size lead-acid battery who wants to watch the pack from an app.

Best forRV and campervan house banksSolar and off-grid storageTrolling motor and marine useReplacing lead-acid deep-cycle batteries
Pros
  • LiFePO4 chemistry is stable and long-lived
  • About 100 Ah of usable capacity at 12.8 V
  • Bluetooth lets you check charge and cell balance from a phone
  • Lighter than a comparable lead-acid battery
  • Standard 12 V form factor fits many existing setups
Cons
  • Needs a LiFePO4-compatible charger or solar controller
  • Bluetooth app adds a setup step some users skip
  • Cold-weather charging needs care; check the low-temp cutoff
  • No built-in heating for sub-freezing use

K2 Energy LiFePO4 Battery 12.8 V 100 Ah prices at every store

  • CampingworldNew

    In stock

    $399.99Checked Nov 12
    Visit Campingworld

Store links may earn us a commission. Price via Klarna.

K2 Energy LiFePO4 Battery 12.8 V 100 Ah price history

Lowest price we've seen: $399.99 on Nov 13 at Campingworld. Tracked across 1 store since Nov 13.

About the K2 Energy LiFePO4 Battery 12.8 V 100 Ah

The K2 Energy is a 12.8 V, 100 Ah lithium iron phosphate (LiFePO4) battery. It has Bluetooth.

Brand
K2
Battery type
LiFePO4
Voltage
12.8 V
Capacity
100 Ah
Height
9.2 in
Connectivity
Bluetooth

Specifications

Battery Technology
LiFePO4Source
Type
BatteriesSource
Height (")
9.2Source
Features
BluetoothSource

Questions and answers

How much energy does a 12.8 V 100 Ah battery hold?
About 1.28 kWh, which is roughly the usable capacity of a much larger lead-acid battery. That runs a typical 12 V fridge for a day or more, or a trolling motor for several hours.
Can I use my existing charger?
Only if it has a lithium or LiFePO4 profile. Lead-acid chargers can overcharge or fail to top it off, so use a charger or solar controller rated for lithium.
What does the Bluetooth feature do?
It pairs with a phone app to show state of charge, voltage and cell-level data. That helps you spot an unbalanced cell or confirm a full charge without a separate monitor.
Can it replace a lead-acid deep-cycle battery?
Yes, in most 12 V systems, and it is lighter with more usable capacity. Check that your charger and any inverter low-voltage cutoff are set for lithium.
Can it be charged below freezing?
LiFePO4 should not be charged below 0 °C. Confirm the battery's low-temperature cutoff before winter use, or keep it above freezing while charging.
Where is the K2 Energy LiFePO4 Battery 12.8 V 100 Ah cheapest?
At Campingworld, for $399.99, as of our latest check.

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