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The Direct Drop-In Upgrade for Group 24 Applications
Replace your old lead-acid battery without a single modification. Our Group 24 LiFePO4 battery is precision-engineered to fit the exact footprint and terminal configuration of the industry-standard Group 24 size. Experience a seamless transition to lithium power—more energy, zero maintenance, and a fraction of the weight, all in a perfectly familiar package.
Why Our Prismatic Group 24 Battery is a Better Value:
Perfect Fit, Zero Hassle:
Designed to the exact Group 24 (DIN 66) dimensions, ensuring it drops directly into the existing battery tray of your vehicle or equipment without any modifications.
Massive Weight Reduction:
Weighing up to 70% less than the lead-acid battery it replaces, it lightens your load for improved efficiency and easier, safer handling.
True Deep Cycle Capability:
Utilize nearly 100% of the rated capacity without damaging the battery, providing significantly more usable energy than a similarly sized lead-acid battery.
Maintenance-Free Reliability:
A sealed, rugged design means no more watering, no corrosive acid leaks, and no need for equalization charges. Install it and forget it.
The LiFePO4 batteries VS Lead-acid batteries:
| Haicen LiFePO4 batteries | VS | Old technology-Lead-acid batteries |
| Stable discharge condition | Low temperature condition | Unstable discharge condition |
| 3,500 times | Cycle life | ＜500 times |
| Around 10 years | Design life | 3 years |
| As little as 3.5 hours | Charging time | Up to 8 hours |
| No memory, opportunity charge | Charge frequency | Must charge after use |
| Multiple built-in protections, high thermal and chemical stability | Safety | Gas inside may cause explosion |
| 85% or more nominal capacity achieved at high working load | Available capacity | Only 30%~50% nominal capacity achieved under high working load |
| Maintenance-free | Maintenance | Regular water-adding and inspection required |
| Pollution-free | Eco-friendly | Lead is a toxic substance, may cause human lead poisoning |
| Extremely low | Energy loss | 15% |
Electrical Specifications:
Nominal Voltage12.8V
Nominal Capacity100Ah
Parallel ConnectionMax. 6units
Serial ConnectionMax. 4units
BMS4S100A
ProtectionOver charge, Over discharge, Over current, Over temp, Short, Balance
CommunicationBluetooth, Heating, Display, RS485 or CANBus
Cycle Life3000times Cycles @100%DOD and 6000times @80% DOD
Self DischargeLess than 3% per month
Charge Efficiency100% @0.2C
Discharge Efficiency98-100% @1C
Charge Specifications:
Charge Voltage14.4±0.2V
Standard Current20A
Fast Current50A
Discharge Specifications:
Standard Current20A
Max. Con. Current100A
Peak Current500A (300ms)
Cut-off Voltage10V
Mechanical Specifications:
Dimensions (mm)260×170×208mm (Group 24)
Approx Weight(KG)10
Terminal TypeM8
Case Color/materialBlack Plastic Case (ABS)
IP RatingIP65
Cell Type3.2V100Ah Prismatic Cell
Temperature Specifications:
Charge Temp0°C to 55°C （32°F to 131°F）
Discharge Temp-20°C to 60°C （-4°F to 140°F）
Storage Temp-5°C to 45°C （23°F to 113°F）
Characteristics Curve:
Group24 Battery Dimensions:
Ideal For: A wide range of Group 24 applications including medium-sized marine boats (trolling motors, aux power), utility vehicles (UTVs), compact tractors, and as a reliable starting and deep cycle battery for mid-size vehicles.
Customized items:
Bluetooth App design: Help you to design and upload customized App, or supply you our Source code for your design.
Case color: Customized case color is acceptable based on quantity more than 300pcs per batch.
Label design: We can help you to design customized label on the battery.
Carton design: Customized carton is acceptable based on quantity more than 200pcs per batch.
Certificates: 50% discount on certificates cost for first bulk order and 100% reback for future orders.
NDA agreement: NDA agreement is allowed and necessary to protect your benefits.
Upgrade Without the Guesswork. Confirm your compatibility and experience the effortless power of a direct-fit lithium replacement.
| TECH & SPECS | Model | |
| 12.8V100Ah Deep Cycle Lithium Battery | ||
| Electrical Specifications | Nominal Voltage | 12.8V |
| Nominal Capacity | 100Ah | |
| Parallel Connection | Max. 6units | |
| Serial Connection | Max. 4units | |
| BMS | 4S100A | |
| Circuit Protection | Over charge, Over discharge, Over current, Over temp, Short, Balance | |
| Communication | Bluetooth, Heating, Display, RS485 or CANBus | |
| Cycle Life | 3000times Cycles @100%DOD and 6000times @80% DOD | |
| Self Discharge | Less than 3% per month | |
| Charge Efficiency | 100%@0.2C | |
| Discharge Efficiency | 98-100%@1C | |
| Charge Specifications | Charge Voltage | 14.4±0.2V |
| Standard Current | 20A | |
| Fast Current | 50A | |
| Discharge Specifications | Standard Current | 20A |
| Max. Con. Current | 100A | |
| Peak Current | 500A(300ms) | |
| Cut-off Voltage | 10V | |
| Mechanical Specifications | Dimensions (mm) | 260×170×208mm (Group 24) |
| Approx Weight(KG] | 10 | |
| Terminal Type | M8 | |
| Case Color/material | Black Plastic Case (ABS) | |
| IP Rating | IP65 | |
| Cell Type | 3.2V100Ah Prismatic Cell | |
| Temperature Specifications | Charge Temp | 0°C to 55°C （32°F to 131°F） |
| Discharge Temp | -20°C to 60°C （-4°F to 140°F） | |
| Storage Temp | -5°C to 45°C （23°F to 113°F） | |
A deep cycle battery is designed to provide sustained power over extended periods and can be discharged up to 80% of its capacity repeatedly without damage. Unlike automotive starter batteries (which deliver short, high-current bursts for engine ignition), deep cycle batteries prioritize deep discharges and recharges. They feature thicker plates and denser active material to withstand cycling stress, making them ideal for renewable energy, marine, RV, and industrial applications.
Recharge immediately after use to avoid prolonged states of partial or full discharge. Do not regularly discharge below 50% Depth of Discharge (DoD) for lead-acid types or 80% for LiFePO4 batteries. For optimal longevity, recharge when the battery reaches 50% capacity (lead-acid) or 20% (LiFePO4). Avoid storing the battery in a discharged state, as sulfation (lead-acid) or cell degradation (lithium) can occur.
While possible in emergencies, it is not recommended. Deep cycle batteries require chargers with tailored voltage/amperage profiles (e.g., bulk/absorption/float phases for lead-acid; CC/CV for lithium). Using an incompatible charger may cause undercharging, overcharging, or reduced lifespan. Always use a charger specifically designed for your battery’s chemistry (e.g., lead-acid, AGM, gel, or LiFePO4).
