Superior Performance, Exceptional Value
Our standard Group 31 LiFePO4 battery strikes the perfect balance between size and power. A versatile and reliable drop-in replacement for lead-acid, it delivers robust performance for a wide range of applications. Ideal for users who need dependable power with essential protection, without the complexity of advanced features.
Benefits of Haicen Smart Group31 Batteries:
Robust & Reliable Power:
Provides strong, consistent power output perfect for demanding applications like large RVs, boats, and off-grid systems.
Essential Protection System:
Built-in BMS safeguards against overcharge, over-discharge, and short circuits, ensuring safety and longevity.
Maintenance-Free Operation:
No watering or terminal maintenance required. Install it and forget it.
Universal Drop-In Replacement:
Designed to fit standard Group 31 battery boxes, making the switch from lead-acid effortless.
Long Service Life:
Offers a remarkable 10-year deep cycle life with 3000+ cycles, far outperforming lead-acid alternatives.
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% |
Key Points for Quality control:
Cell match: More strict cell matching standard, the difference of lnternal resistance is 1mΩ and voltage is 5mV.
Automatic cells welding: Cells are assembled by Automatic welding equipments to ensure the quality reliability and consistency.
100% Cycle test: All battery packs are 100% cycle tested (Fully Discharged→Fully Charged→Fully Discharged→60% Charged) before package and all test reports are stored.
Unique tracking number: All battery packs are lasered an unique number on the case side for quality tracking.
Certifications:
| UL1642(Cell) | IEC62619 (Cell) | UN38.3(Cell/ Pack) |
| IEC62133(Cell) | ROHS(Cell) | CE(Pack) |
Group 31 Battery Dimensions:
Internal Structure:
SOC Display (optional):
Characteristics Curve:
Market Applications:
Internal Structure:
Characteristics Curve:
Idea For:
Large RVs and Motorhomes
Mid-Size Fishing and Pleasure Boats
Solar Energy Storage Systems
Industrial and Motive Power Equipment
Backup Power Units
Customized items:
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.
Ready to Upgrade Your Power?
[➔ Download the Full Specification Sheet (PDF)]
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| TECH & SPECS | Model | |||||
| HCG31-12132 | HCG31-12150 | HCG31-12165 | HCG31-2480 | HCG31-4840 | ||
| Electrical Specifications | Nominal Voltage | 12.8V | 12.8V | 12.8V | 24V | 48V |
| Nominal Capacity | 132Ah | 150Ah | 165Ah | 80Ah | 40Ah | |
| Parallel Connection | Max. 6units | Max. 6units | Max. 6units | Max. 6units | Max. 6units | |
| Serial Connection | Max. 4units | Max. 4units | Max. 4units | Max. 2units | No | |
| BMS | 4S150A | 4S150A | 4S150A | 8S80A | 16S50A | |
| Circuit Protection | Over charge, Over discharge, Over current, Over temp, Short, Balance | |||||
| 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 | 14.4±0.2V | 14.4±0.2V | 28.8±0.4V | 57.6±0.8V |
| Standard Current | 26A | 30A | 33A | 16A | 8A | |
| Fast Current | 66A | 75A | 82A | 40A | 20A | |
| Discharge Specifications | Standard Current | 26A | 30A | 33A | 16A | 8A |
| Max. Con. Current | 132A | 150A | 150A | 80A | 40A | |
| Peak Current | 600A(300ms) | 600A(300ms) | 600A(300ms) | 400A(300ms) | 200A(300ms) | |
| Cut-off Voltage | 10V | 10V | 10V | 20V | 40V | |
| Mechanical Specifications | Dimensions (mm) | 330x173x216mm(Group 31) | ||||
| Approx Weight(KG] | 15 | 15.5 | 15.5 | 15 | 15 | |
| Terminal Type | M8 | |||||
| Case Color/material | Black Plastic case(ABS) | |||||
| IP Rating | IP65 | |||||
| Cell Type | Cylinder LiFePO4 cell | |||||
| Cell holder | Yes | |||||
| Temperature Specifications | Charge Temp | 0℃ to 55℃ (32℉to131℉) | ||||
| Discharge Temp | -20℃ to 60℃ (-4℉ to 140℉) | |||||
| Storage Temp | -5℃ to 45℃ (23℉ to 113℉) | |||||
