12V 172Ah Cranking & Deep Cycle (Dual Purpose) LiFePO4 Battery
Pickup available at our Marathon storefront
Available for pickup or shipping
12V 172Ah Cranking & Deep Cycle (Dual Purpose) LiFePO4 Battery is backordered and will ship as soon as it is back in stock.
(Ship Note)
Ready to order
Pickup available at Marathon Storefront
Usually ready in 24 hours
- Expert technical support
- Secure checkout
- Fast shipping
Need help choosing? Call our marine experts at (305) 998-4300.
Delivery and Shipping
Delivery and Shipping
Items in stock gernally ship same day.
Items that require splicing will be made in order from the date it is ordered. If you want something fast, just give us a call.
Any items that require freight will be quoted and shipped once approved.
Shipping in the keys can be delieverd same day for a fee.
12V 172Ah Cranking & Deep Cycle (Dual Purpose) LiFePO4 Battery is backordered and will ship as soon as it is back in stock.
Description
Description
Why we carry Epoch: an American company that stands behind its batteries, answers the phone, and offers real tech support for boat and RV owners. Read why we buy Epoch
Upgrade your boat with the Epoch 12V 172Ah Dual Purpose battery. Replace heavy lead-acid starting and house banks with one 2.2kWh lithium powerhouse.
Features
- 1,000A peak cranking pulse (5 s) plus 172Ah / 2.20kWh deep-cycle capacity
- BCI Group 31 footprint
- Bluetooth monitoring with the Epoch Li-Ion app (iOS and Android)
- BMS with overcharge, over-discharge, over-current, short-circuit, temperature and low-temperature charge protection
- IP65 enclosure, ABS/PC case rated UL94-V0
- Up to 4 batteries in parallel
- 4,000+ cycle life
- 11-year warranty
Specifications
| Epoch part number | 12172A-DP |
| Electrical | |
|---|---|
| Capacity | 172Ah (2,202Wh / 2.20kWh) |
| Nominal voltage | 12.8V |
| Max charge voltage | 15.0V (maximum input rating, not a charger target) |
| Operating voltage range | 10.0V to 14.6V |
| Max continuous discharge | 200A |
| Peak discharge | 1,000A for up to 5 s (cranking only) |
| Max continuous charge | 200A |
| Recommended charge current | 86A (0.5C) |
| Series / parallel | Series not approved; up to 4 in parallel (688Ah) |
| Cells | Prismatic LiFePO4, 4S1P |
| Cycle life | 4,000+ cycles |
| Cold cranking amps | Approx. 1,000 CCA equivalent (Epoch says this is not a tested CCA rating) |
| Charger settings | |
| Bulk / absorption | 14.2V to 14.6V |
| Absorption end | Charge current at or below C/20, or 15 minutes max |
| Float | 13.4V to 13.8V, or off |
| Re-bulk | 13.2V |
| Equalization | Disabled |
| Temperature compensation | Disabled (0 mV/°C) |
| Temperature | |
| Charging | 23°F to 131°F (−5°C to 55°C) battery rating; program chargers for 32°F to 131°F (0°C to 55°C) |
| Discharging | −4°F to 140°F (−20°C to 60°C) |
| Storage | 32°F to 95°F (0°C to 35°C) recommended |
| Self-heating | No (low-temperature charge protection) |
| Physical | |
| Weight | 40 lb (18.14 kg) |
| Dimensions (L × W × H) | 12.91 × 6.22 × 8.46 in (328 × 158 × 215 mm) |
| BCI group / footprint | Group 31 |
| Terminals | M8 female; torque 8–12 Nm (71–106 in-lb) |
| Water resistance | IP65 (dust-tight, protected against low-pressure water jets, not submersible) |
| Bluetooth | Yes, Epoch Li-Ion app (iOS and Android) |
| Certifications | UL 1642 (cells), UL 9540A (cells), IEC 62619:2022, CE, RoHS, UN 38.3 |
| Warranty | 11 years (register within 90 days) |
Dimensions

From Epoch: Epoch datasheet (PDF) · Epoch product page
Specs are from Epoch's published datasheet. Confirm system voltage, charger settings, wiring and installation requirements before use.
Ships directly from Epoch Batteries.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




