ECO-WORTHY 12V 100Ah LiFePO4 Battery with Bluetooth: specs and fit

The ECO-WORTHY 12.8V 100Ah is a lithium iron phosphate (LiFePO4) battery in the Group 24 size. It is meant for trolling motors, RVs, boats, cabins and off-grid solar systems, and it can replace a lead-acid, AGM or sealed battery of the same size. This page explains what the main specs mean and what to confirm for your own setup.

What LiFePO4 and 1,280Wh mean

LiFePO4 is a lithium chemistry known for being stable and for handling many charge cycles. A 12.8V battery rated at 100Ah stores about 1,280 watt-hours (12.8V x 100Ah), which is the figure ECO-WORTHY quotes. As a rough guide, that is enough to run a 100W load for several hours. Unlike lead-acid batteries, lithium cells can usually be discharged much deeper without the same loss of life, so the usable capacity is typically larger than that of a lead-acid battery with the same amp-hour label.

Group 24 size and weight

The case follows the BCI Group 24 standard and measures 10.2 x 6.6 x 8.4 inches (about 26 x 17 x 21 cm). It weighs 23.2 lb (about 10.5 kg). ECO-WORTHY says this lighter weight eases the load on a boat and that the battery can swap into a Group 24 lead-acid, AGM or SLA slot without changing the wiring. Always check that the terminals, battery tray and charging equipment suit lithium.

Built-in battery management system

The battery has a 100A BMS (battery management system), the circuitry that guards the cells. ECO-WORTHY says it protects against overcharge, over-temperature, over-discharge, over-current, low temperature and short circuit. The brand says the cells are tested to UL and IEC standards and carry CE and RoHS certification. Follow the manual and local electrical codes for installation and charging.

Bluetooth monitoring

Bluetooth 5.0 lets you check voltage, current and capacity from a phone app, which is useful on a boat or in an RV where the battery is tucked out of sight. When several batteries are connected, ECO-WORTHY says the app helps identify a problem unit.

Cold-weather charging

Lithium cells can be damaged if charged below freezing. ECO-WORTHY says the battery cuts off charging when the cell temperature falls under -7°C (19.4°F), which protects it in winter use.

Building a larger bank

The listing mentions 2S4P arrangements, giving from 1.28 kWh up to 10.24 kWh. In general, connecting in series raises voltage and connecting in parallel raises capacity. Check the manual for the supported configurations and limits before wiring more than one battery together.

Warranty

ECO-WORTHY lists a three-year warranty and says it aims to respond within 24 hours.

Who it suits

It suits anglers running trolling motors, RV and camper owners, people building a small off-grid solar system and anyone looking to replace a heavier Group 24 battery with a lighter lithium one.

What to check before you buy

• Charger and charge source: confirm your charger, alternator or solar controller has a lithium-compatible profile.
• Load: check that the 100A BMS limit covers your motor or inverter's peak current.
• Fit: measure the battery space and terminal position.
• Cold climate: remember charging stops below -7°C, so plan for storage in a sheltered place.
• Wiring and fusing: follow the manual and local codes, and fit proper fuses and cable sizes.
• App: check that your phone supports Bluetooth 5.0.

The short version

• A 12.8V, 100Ah, 1,280Wh LiFePO4 battery in Group 24 size, 23.2 lb.
• Built-in 100A BMS with several protections.
• Bluetooth 5.0 app monitoring of voltage, current and capacity.
• Low-temperature charge cut-off below -7°C.
• Can be wired as a larger bank of up to 10.24 kWh, with a three-year warranty.

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