EvMac 304Ah Standard Battery

EvMac 304Ah Standard Battery is built with stable LFP crystal structure and fully sealed aluminum casing, the cell passes comprehensive abuse tests with zero fire or explosion risks. It features ultra-low AC internal resistance below 0.25mΩ and high mass energy density up to 175Wh/kg, supporting 2C continuous discharge and 3C short pulse discharge to satisfy high-power startup requirements. With a wide discharge temperature range of -20℃~60℃ and controlled charging temperature of 0℃~60℃, it maintains stable capacity in extreme cold and hot environments.

As part of SinoMac, EvMac is committed to providing a one-stop supply of high-security, low-temperature-resistant solid-state lithium batteries, semi-solid-state lithium batteries, and high-performance large power battery systems. EvMac’s lithium battery production team has extensive experience in large-scale lithium battery manufacturing and the capability for long-term stable output.

We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advantages of EvMac 304Ah Standard Battery

CBA71173204-304Ah cell adopts stable lithium iron phosphate material with excellent intrinsic safety, passing overcharge, overdischarge, short-circuit and heating abuse tests without fire or explosion, matched with sealed aluminum alloy shell to prevent electrolyte leakage and multi-level BMS dual undervoltage protection of 2.5V and 2.0V.
The fresh cell AC internal resistance is less than 0.25mΩ paired with mass energy density ≥175Wh/kg, supporting standard 1C charge/discharge, max 2C continuous discharge and 3C 10-second pulse discharge to meet high-power startup demands of heavy-duty machinery.
Produced on fully automated precision production lines, all cells are strictly screened by capacity, open-circuit voltage and internal resistance to guarantee outstanding consistency for series-parallel battery pack assembly.
It achieves more than 4500 standard charge-discharge cycles at 25℃ under 300±30kgf clamping force, with monthly self-discharge rate ≤3.5% to keep low capacity attenuation during long-term storage and standby use.

Technical Specifications

Nominal Capacity:	304Ah
Rated Current:	1C
Nominal Voltage:	3.2V
Maximum Charging Voltage:	3.65V
Minimum Discharge Voltage:	2.5V
Maximum Instantaneous Discharging Current:	3C
Maximum Instantaneous Charging Current:	3C
Single Cell Weight:	5600g±120g
Size:	71173204 mm
Lead Time:	15 – 30 Working Days
Payment Terms:	T/T ,L/C

coming soon

Battery Model	Standard Charge and Discharge Rate	Battery Capacity
(-20°C~-35°C) Mining Equipment Baterry	1C/1C	206Ah、230Ah、280Ah、314Ah
(-20°C–35°C) Maritime Vessels Baterry	1C/1C	206Ah、230Ah、280Ah、314Ah
208Ah Battery	1C/1C	280Ah
304Ah Standard Battery	1C/1C	304Ah
304Ah Low Temp Battery	1C/1C	304Ah
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EvMac 304Ah Standard Battery Basic performance
Parameter	Specification	Condition
Size	71mm173mm204mm	–
Rated Current	1C	304A
Nominal Capacity	304Ah	Nominal charge and discharge
Nominal Voltage	3.2 V	25±2°C
Weight	5600g±120g	–
Maximum Charging Voltage	3.65V	0°C≤T≤60°C
Minimum Discharge Voltage	2.5V	0°C
Minimum Discharge Voltage	2.0V	-20°C
Maximum Instantaneous Discharging Current	3C	10s ≥30%SOC 25±2°C
Maximum Instantaneous Charging Current	3C	10s ≥30%SOC 25±2°C
Energy Density	≥175 Wh/kg	Mass Energy Density
Energy Density	≥385 Wh/L	Volume Energy Density
AC Internal Resistance	<0.25mΩ	Fresh Cell
Monthly Self-discharge	Per Month ≤3.5%	Standard charging to 45% SOC, 25±2°C storage
Rest SOC	≥5%	SOC interval without load or charging
Storage Temperature	-20~35℃ within 3 months	Storage environment humidity<85%RH SOC：20-50%SOC
Cycle Fading	≤5%	–
Storage Fading	≤5%	–
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Propelling Performance Diagrams of WD615.61C01N

Cell dimension
No.	Name	Dimension parameters
1	T	72.4±0.8mm
2	W	173.8±0.6mm
3	L	204.96±0.95mm
4	L1	208.83±0.95mm
5	L2=L3=L5=L6	34.8±0.5mm
6	L4	128.0±0.5mm
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Can Quality be Guaranteed?

(1)Strict production process and testing: The production process adopts advanced manufacturing technology and strict quality management system to ensure that each engine is precisely assembled and tested. Komatsu will conduct various performance tests, such as power test, emission test, etc., to ensure the running stability and reliability of the engine.
(2) Quality management system: Our company has a complete quality management system to ensure that every link meets strict quality standards.
(3) Continuous improvement and feedback mechanism: We focus on continuous improvement, communicate with customers through feedback mechanism, continuously optimize product quality and performance, and ensure that the needs of the market and customers are met.

Is the Price Reasonable?

We are the original manufacturer and can give you the most suitable price. The key to dealing with Chinese suppliers is to find and choose reliable business partners who will not deceive you for short-term business, but aim to establish a long-term career and lifelong partnership. EMAC is one of the reliable partners. We will not pursue short-term high profits, but we care about our decades of good reputation. Our cooperation with all business partners is not only as suppliers and customers, but also as close friends and brothers.

What should I do if I don’t Understand the Product?

You can unconditionally explain your needs to us. We have a professional team that uses simple and clear language to explain the characteristics and advantages of the product and help you choose the right engine to match your machine. If you need further support or explanation, we are always available to help and explain the relevant content to help you solve the problem.

How to Place an Order?

You can confirm the product by connecting with our sales, or you can choose to contact us through wahtspp or your email, and we will guide you to complete the order process.