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Deal.ai › WattCycle
WattCycle
WattCycle 12V Deep Cycle LiFePO4 Battery

WattCycle 12V Deep Cycle LiFePO4 Battery

Best price now

$179.90at eBayChecked 1 h ago

20% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Lowest price today: $179.90 at eBay (checked Nov 12, 2026).
  • Checked at 4 stores.

Our take on the WattCycle 12V Deep Cycle LiFePO4 Battery

The WattCycle 12V 100Ah is a lithium iron phosphate deep-cycle battery in a BCI Group 24 case, built for trolling motors, RVs and boats. It pairs a 120A BMS with Bluetooth monitoring, low-temperature charge protection with automatic recovery, and IP67 waterproofing. It weighs about 22.75 lb, roughly half a comparable lead-acid battery, and is rated for 4000+ cycles at 100% depth of discharge. Against flooded and AGM deep-cycle batteries it lasts far longer and needs no maintenance, though it costs more up front and needs a lithium-compatible charger.

Best forTrolling motor ownersRV and campervan house powerBoat and marine auxiliary systemsOff-grid and backup power setups
Pros
  • Bluetooth app shows voltage, capacity and state of health in real time
  • Low-temp charging cutoff with automatic recovery above 41°F
  • IP67 rated for wet marine installations
  • 120A BMS with 300A peak and 500A surge current
  • Expandable to 4 in parallel and 4 in series
  • About 22.75 lb, far lighter than an equivalent lead-acid battery
Cons
  • Needs a lithium-profile charger; many old lead-acid chargers won't fully charge it
  • Cold below freezing blocks charging until it warms up
  • Bluetooth range and app reliability are common gripes on budget lithium batteries
  • Group 24 footprint won't drop into every Group 27 or 31 tray

WattCycle 12V Deep Cycle LiFePO4 Battery prices at every store

  • eBayNew

    In stockSold by wattcycle_global

    $179.90Free shippingChecked 1 h ago
    Visit eBay
  • WattCycleNew

    In stock

    $179.99Free shippingChecked 1 h ago
    Visit WattCycle
  • WalmartNew

    In stockSold by WattVeo LIMITEDReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $224.99Free shippingChecked 1 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $237.49Free shippingChecked 1 h ago
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission.

WattCycle 12V Deep Cycle LiFePO4 Battery price history

Lowest price we've seen: $179.90 on Nov 13 at eBay. Tracked across 4 stores since Nov 13.

What reviewers say

Owners of budget LiFePO4 batteries like this one generally praise the weight savings, the long cycle rating and the Bluetooth readout. Complaints tend to center on app connectivity and on chargers that don't match the lithium profile.

What people mention
  • WeightPraisedOwners note it is much easier to lift and install than the lead-acid battery it replaces.
  • Bluetooth appMixedThe live voltage and capacity readout is useful, but connections drop and readings can drift.
  • Cold chargingMixedLow-temp cutoff protects the cells, but charging stalls in freezing weather until the battery warms.
  • ChargingCriticisedIt needs a lithium-compatible charger; older lead-acid chargers may not reach a full charge.
  • BuildPraisedThe sealed IP67 case and internal BMS are seen as solid for marine and RV mounting.

About the WattCycle 12V Deep Cycle LiFePO4 Battery

This is a 12V 100Ah LiFePO4 (lithium iron phosphate) deep cycle battery in the BCI Group 24 size.

Battery type
12V LiFePO4 lithium, deep cycle
Runtime examples
1000W air conditioner: 3.6 hours; 800W coffee maker: 4.5 hours
Post location
Top and side post
Size
BCI Group 24; 10.24 x 6.61 x 8.35 in (L260 x W168 x H209 mm)
Weight
22.75 lb
Color
Black
Model
WATT12V100AH100TMBT
Applications
Trolling motors, boats, RVs, campers, marine gear, home storage, off-grid systems

Specifications

Automotive battery type
Lithium BatterySource
Cold crank amp
1200 CCASource
Bci group number
24Source
Reserve capacity
220 minSource

Questions and answers

Can I use it as a direct replacement for a Group 24 lead-acid battery?
Yes, it fits a Group 24 tray at about 10.24 x 6.61 x 8.35 in. You need a lithium-compatible charger, and check that your alternator or DC-DC charger suits lithium.
How long will it run a trolling motor?
Runtime depends on motor draw. At a 50A draw the 100Ah capacity gives roughly two hours; at lower speeds it lasts much longer.
Does the Bluetooth app work without a shunt?
Yes. The built-in BMS reports voltage, capacity and health over Bluetooth, so no separate monitor is needed, though readings can differ slightly from a shunt.
Can I charge it below freezing?
Charging stops below 32°F and resumes automatically once the battery is above 41°F. Discharging works down to -4°F.
Can I connect several together?
Yes, up to 4 in parallel and 4 in series, giving up to 400Ah at 12V or 48V at 100Ah. All batteries should be the same model and age.
What is in the box?
The battery itself. Chargers, mounting hardware and cabling are not included.
Where is the WattCycle 12V Deep Cycle LiFePO4 Battery cheapest?
At eBay, for $179.90, 20% under what the other stores charge, as of our latest check.
Where can I buy the WattCycle 12V Deep Cycle LiFePO4 Battery?
4 stores we checked sell it, including eBay, WattCycle, Amazon, Walmart.

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Buying guides that pick the WattCycle 12V Deep Cycle LiFePO4 Battery

  • Best 12V LiFePO4 deep cycle batteries for RV, solar and trolling motor use

Stores we've priced the WattCycle 12V Deep Cycle LiFePO4 Battery at

  • Walmart deals and prices

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Battery post location
Top & Side PostSource
Features
Back Up Power Source, Automatic, LightweightSource
Brand
WattCycleSource
Vehicle fitment type
UniversalSource
Vehicle type
BoatSource
Model
WATT12V100AH100TMBTSource
Dimensions
10.24 x 6.61 x 8.35 inSource
Weight
22.75 lbSource
Accessories
12v 100ah lifepo4 lithium batterySource
Volts
12 VSource
Compatible cars
Trolling MotorsSource
Size
BCI Group 24 Size, L260 x W168 x H209mm
Applications
Motorhome, Boat, etc
Processing time
1-2 business days
Air conditioner (1000W)
3.6 hours
Coffee maker (800W)
4.5 hours
Piece Count
1
color
Black
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