12V 320Ah ComFlex Smart LiFePO4
The house-bank pick. 4,096Wh in a single 60 lb battery — and the first in this lineup that talks to the rest of the boat: CAN + RS485 with NMEA 2000 and Victron support put true state-of-charge on your chartplotter or GX display instead of a voltage guess. Self-heats in the cold, Bluetooth on your phone, and parallels up to 16 units if the boat grows.
Buy at LiTime.com →LiTime LiHeat 12V 320Ah ComFlex · Partner product — the purchase completes on LiTime's site, and LiTime ships and supports the battery directly with a 5-year warranty.
320Ah is a big bank — a basic 10A charger would take more than a day to refill it. This matching 14.6V 60A LiFePO4 unit does it in about 5½ hours and mounts to a bulkhead.
Get the matching charger at LiTime.com →Disclosure: we may earn a commission on purchases made through these links, at no extra cost to you.
Specifications
| Capacity | 320Ah / 4,096Wh |
| Weight | 59.97 lbs — in a case ~35% smaller than typical 300Ah LFP (per LiTime) |
| Size | 14.49" × 7.44" × 10.04" |
| Continuous discharge | 200A BMS (1,000A for 1 second) |
| Communication | CAN + RS485 — NMEA 2000, RV-C, Victron; Bluetooth 5.0 app |
| Expansion | Up to 16 in parallel with comms (4P4S without) |
| Cycle life | 4,000 cycles at 100% depth of discharge (per LiTime) |
| Self-heating | Dual-mode via app; auto-heats while charging between -4°F and 41°F |
| Warranty | 5 years |
Why LiFePO4 beats lead-acid
- It outlasts 8–10 lead-acid batteries. A deep-cycle lead-acid gives you 300–500 cycles; this battery is rated for 4,000+. Over a decade of fishing, lead-acid costs more in replacements alone — before you count the Saturdays lost to a dead bank.
- All of its capacity is usable. Draining lead-acid past ~50% wrecks it, so a "100Ah" lead-acid is really a 50Ah battery. LiFePO4 delivers essentially its full rating.
- Full thrust to the last cast. Lead-acid voltage sags as it drains — your motor gets weaker all day. LiFePO4 holds voltage nearly flat, so the motor pulls the same at 4pm as it did at first light.
- A fraction of the weight in the bow — where weight matters most for how the boat rides. See the spec table above for the exact numbers versus the lead-acid bank this replaces.
Why we recommend LiTime
- Purpose-built trolling line — these are LiTime's TM/marine models: IP65-sealed, shock-rated, with low-temperature protection built into the BMS. Not a repackaged RV battery.
- Dedicated-voltage design — one battery instead of a series bank means no wiring to get wrong and no mismatched batteries aging each other.
- 5-year warranty, US support — LiTime is one of the largest-volume LiFePO4 brands, ships from US warehouses, and stands behind the battery directly.
- Roughly half the price of boutique brands for the same chemistry and a comparable warranty. We'd rather you spend the difference on fuel.
Mounting the motor too?
Our reversible aluminum bow plate fits virtually every center console — and both 4-bolt and 6-bolt puck patterns.
View the trolling motor mount — $275