Timeusb 12V 140Ah Smart

Last updated: October 31, 2026

Timeusb 12V 140Ah Smart
4.0/5#3 of 20 in 100 ah class 12V batteries
4.0

For boaters and RV owners who want more runtime than a 100Ah battery without changing their Group 31 battery tray.

  • 140 Ah (1,792 Wh)Capacity
  • 150 AContinuous output
  • Charge cutoff onlyCold charging
  • YesBluetooth
  • 5 yearsWarranty
  • $0.17Price / Wh
Check price at Amazon$299.99

Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • 40% more capacity than a 100Ah battery in the same Group 31 tray
  • 150 A continuous output handles a 1,500 W inverter or a big trolling motor
  • Bluetooth app shows charge level and current
  • Stops charging below freezing to protect the cells
Cons
  • At 28 lb it is heavier than a mini 100Ah battery
  • No heater, so it will not charge until it warms above 41 °F
  • No independent capacity test found

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberT12V140-150-GROUP31-BT-4-A100
Capacity
Rated capacity140 Ah (1,792 Wh)
Nominal voltage12.8 V
ChemistryLiFePO4
Rated cycle life4,000 at 100% depth
Price per Wh$0.17
BMS
Continuous discharge150 A
Peak discharge700 A for 1 s
Max charge current140 A
Low-temperature chargingCharge cutoff only
Bluetooth monitoringYes
Series / parallelup to 4 in series, 4 in parallel
Build
Case sizeGroup 31
Dimensions13 x 6.77 x 8.5 in
Weight28.1 lb
TerminalsM8 bolt
Water resistanceIP65
Warranty5 years
Released2024-10

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