Voltertech Co.,Limited
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Enclosure Rating | IP65 Marine - Grade Weatherproof & Impact-Resistant Case |
| Kinetic Output | 200A Continuous Discharge / 300A High - Torque Surge |
| Cell Architecture | Tier-1 314Ah Prismatic LiFePO4 Grid Cells |
| Supply Ability | 5000 Units per Month |
| Retrofit Blueprint | Seamless Lead - Acid Drop-In for Large - Scale 12V Banks |
| Energy Density | 4019Wh Master Single - Block Capacity (12.8V 314Ah) |
| Payment Terms | L/C,T/T,Western Union |
| Safety Integration | Solid - State Smart BMS with Dynamic Cell Balancing |
| Terminal Interface | Heavy - Duty M8 Pure Copper Torque Posts |
| System Autonomy | Sustains 72 - 96 Hours of Total Off - Grid Independence |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Certification | MSDS , UN38.3 |
| Model Number | PB-4KWH-12.8V-Q-2 |
| Brand Name | Voltertech |
| Place of Origin | China |
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Product Specification
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production | Enclosure Rating | IP65 Marine - Grade Weatherproof & Impact-Resistant Case |
| Kinetic Output | 200A Continuous Discharge / 300A High - Torque Surge | Cell Architecture | Tier-1 314Ah Prismatic LiFePO4 Grid Cells |
| Supply Ability | 5000 Units per Month | Retrofit Blueprint | Seamless Lead - Acid Drop-In for Large - Scale 12V Banks |
| Energy Density | 4019Wh Master Single - Block Capacity (12.8V 314Ah) | Payment Terms | L/C,T/T,Western Union |
| Safety Integration | Solid - State Smart BMS with Dynamic Cell Balancing | Terminal Interface | Heavy - Duty M8 Pure Copper Torque Posts |
| System Autonomy | Sustains 72 - 96 Hours of Total Off - Grid Independence | Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Certification | MSDS , UN38.3 | Model Number | PB-4KWH-12.8V-Q-2 |
| Brand Name | Voltertech | Place of Origin | China |
| High Light | 12.8V IP65 Lithium Battery ，High Capacity IP65 Lithium Battery | ||
12.8V 314Ah IP65 Lithium Battery for High Capacity Lead Acid Replacement
This 12.8V 314Ah IP65 lithium battery provides approximately 4.02kWh of nominal LiFePO4 energy. It can be evaluated for high-capacity 12V lead-acid replacement projects where the charger, load current, physical space and cable system are compatible.
A replacement decision should not be based only on both products being described as 12V batteries. Lithium and lead-acid systems can use different charging profiles, voltage limits and protection behavior.
1. Confirm that the charger supports the 10.0–14.6Vdc operating range and 14.0V floating-charge setting.
2. Compare the 523 × 269 × 218mm enclosure with the existing battery compartment.
3. Check whether the existing cables and protection equipment are suitable for the planned current.
4. Verify the M8 terminal location, cable-lug size and polarity arrangement before installation.
The battery supports up to 100A continuous charging and 200A continuous discharge. These values are maximum battery limits and should be compared with the charger and load requirements.
The one-second pulse specification is 300A. This short-duration value may support a compatible brief startup condition but must not be used as the continuous cable or breaker rating.
The integrated BMS protects against overcharge, overdischarge, overcurrent, short circuit and overtemperature. Unlike a lead-acid battery, the lithium battery may disconnect its output when a protection threshold is reached.
The connected equipment should therefore operate within the battery limits without depending on repeated BMS shutdowns. Low-voltage settings and charger parameters should be configured correctly.
IP65 does not remove the need to protect terminal connections, cable lugs and external fuses or breakers.
| Lithium Battery Rating | 12.8V / 314Ah / 4019Wh |
| Charging Window | 10.0–14.6Vdc / 14.0V Float |
| Charge and Load Limits | 100A Charge / 200A Discharge |
| Pulse Output | 300A for 1 Second |
| Terminal Arrangement | M8 |
| Battery Case Size | 523 × 269 × 218mm |
| Battery Weight | 27.2kg Net / 28.7kg Gross |
| BMS Protection | Overcharge / Overdischarge / Overcurrent / Short Circuit / Overtemperature |
| Enclosure and Documents | IP65 / UN38.3 / MSDS |
No. Electrical, mechanical and charging compatibility must be confirmed.
Only when its voltage profile and operating behavior are compatible with the lithium battery.
Yes. Suitable external cable and system protection are still required.
It may disconnect when a documented protection threshold is reached.
Provide charger data, battery compartment size, load current, cable size and existing protection ratings.
Replacing a large 12V lead-acid battery bank?
Company Details
Business Type:
Manufacturer
Year Established:
15 Years
Total Annual:
5000000-10000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st... About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st...
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