Active Member
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[China]
Address: Room 602, building D, Huojuyuan , Yangguang Road, High-Tech District, Luoyang Area of China(henan) pilot free tradezone, henan Province, China.
Contact name:
Henan Duxin Science Technology Co.,Ltd. |
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1. General Information
This specification Describes the type and size, performance, technical characteristics, warning and caution of the rechargeable cell. If the user needs to support the parallel use, please charge the battery packs until output voltage difference is less than 0.2V.The non-professionals forbid performing this operation. It is strictly prohibited any series between the battery packs. If user needs to support the series use, please contact us and acquisition serial using pack.
2.
Specification
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Customize Any of The Following Battery Packs as Required
Can be customized according to the requirements of 3.7V, 7.4V,
11.1V, 14.8V, 18.5V, 22.2V, 25.9V, 36V, 48V, 60V, 72V
BMS specification of 200Ah lithium battery 24 volts
rechargeable:
Cell overcharge detection voltage: 3.90V±50mV
Cell overcharge recovery voltage: 3.80V±100mV
Cell over-discharge recovery voltage: 2.30V±100mV
Rated operational charge current: 200 A
Over current detection: 100±30A
BMS impedance: ≤20mΩ
12V 50Ah advantage
Cycle life: More than 2000 cycle times
Very safe: It have the best safety and steady performance,no fire ,no exploding under the condition of over-charge.
Light weight and smaller dimension: The dimension compares with other battery.about 1/2-2/3 weight of lead acid
Great capacity and more powerful,rechargeable battery: We can install many single cells in series and in parallet and it can fully discharge
No memory effect: It can be recharged anytime,no reduction of the capacity
3.
Battery Pack Electrical Characteristics
3.1 Testing Conditions (Unless Specially Requirements)
Temperature:20±5℃ Related Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
The testing items under the Shipment Voltage(38.4～40.8V)
3.2 Battery Pack Electrical Characteristics
| No. | Items | Standards | Testing Methods |
| 1 |
Internal Impedance | Impedance ≤40mR | Under 20±5℃ Environment Temperature , the Usage Frequency of Fully Charge( 1KHz) , Use AC Internal Impedance test machine to test |
| 2 | Nominal Capacity | 80Ah | Rest for 0.5~1 hour after fully charge, Using electrical loader to connect with the battery output port, and discharge with constant current 0.2C till it can’t discharge. Do the cycle three times, if there is one time that the discharge time is equal or more than 285minute , you can stop. |
| 3 | Short circuit protection | / | Short circuit prohibited |
| 4 | Allowed Maximum continuous charge Current | 40A | charging with this current for more than 0.5h and the added temperature of battery pack less than 20℃. |
| 5 | Allowed Maximum continuous discharge Current | 80A | Discharging with this current for more than 0.5h and the added temperature of battery pack less than 20℃. |
| 6 | Over Current Protection | 300~400A | Using electron load connect with output side, discharge with 300A for about 2sec Discharge with 400A for less than 200 millisecond, |
| 7 | the delay time of over current protection | 50~200ms | Using electron load connect with output side, discharge with more than 400A and record the voltage wave of output side with oscillograph . Numerating the time of voltage from wave to zero for voltage | |||
| 8 | cycle life | Discharge Capacity ≥80% | Discharge it with the current of 0.2C to the cut-off voltage, and store it for 15min.Charge a battery with the current of 0.2C, then keep the voltage and current constant and continue to charge it until completed . After storing the battery for 15min. The test is to be conducted as per the above cycles. The cycle should be 1000 times. At the 1001 times discharge capacity should not be less than ≥80% with 0.2C. | |||
| 9 | Discharge Temperature Characteristics | The ratio between discharge capacity and charge capacity should be not less than the following value | At 20±5℃ discharge the battery with the current of 0.2C to the cut-off voltage and record charge capacity. Store the battery at the following temperature for 2h and discharge the battery with 0.2C to the cut-off voltage. | |||
| Discharge Current | Discharge Temperature | |||||
| -20℃ | 0℃ | 25℃ | 55℃ | |||
| 0.2C | 60% | 80% | 100% | 95% | ||
| 10 | Charge Retention | remain capacity≥90% | At 20±5℃ completely charge and store it for 28days,and then discharge it with 0.2C to the cut-off voltage. (We suggest charge the battery to 38.4~40.8V every three months) | |||
| 11 | Over Discharge Protection furbish | Charging With 0.2C | Charge the battery with 0.2C for 5min and measure the output voltage (≥27.6V)of the battery pack. The battery should have load . | |||
Safety Test
No fire, no explosion
Charing to 3.7v and do nail penetration test, there is no fire, no explosion, no any other obvious changes.
Nail Penetration Test and Overcharge Test
After testing, no fire and no explosion, that is definitely approved than our lithium batteries deserve you.
BATTERY PACK SAFETY TEST
.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity
2 Battery Pack Safety Test
| No. | Items | Standards | Testing Methods |
| 1 | Short-Circuit | The battery should be no remarkable breakage, distortion. And charge normally. | Use a resistor with less than 0.05Ω to make the battery short circuit for 1 hour. The appearance and characteristics are normal. |
| 2 | Over Discharge Protection Test | The battery should be no remarkable breakage, distortion. Appearance and charge are normal. | Discharge the battery at the rate of 0.2C with the load of 30Ω for 24h . Charging for 10sec with specified adapter , and check the voltage(≥27.6V) |
| 3 | Impact Test | The battery should be no explosion or catch fire | Place a full charged battery on a flat and put a stainless steel stick (Diamond 7.9mm) in the middle of the battery upright . Beat the steel stick with 9.1Kg |
Battery Pack Reliability Test
4.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity
4.2 Reliability Test
| No. | Items | Standards | Testing Methods | |
| 1 | Vibration Testing | The appearance of battery should not leakage, break or explosion | Fix a charged battery on a vibrating table, vibrate it for 90 minutes in three mutually perpendicular directions at the 0.8mm resonance. The frequency is to be varied at the rate of 1hz/min between 10 and 55 hertz. | |
| 2 | High Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than 255mins | Place a full charged battery under the environments of 55℃ for 2 hours. Discharge it at the current of 0.2C to the cut-off voltage. Then keep it at 20℃±5℃ for 2 hours. | |
| 3 | Low Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than 180 minute | Place a full charged battery under the environments of -20℃ for 15-24 hours. Discharge it at the current of 0.2C to the cut-off voltage. Then keep it at 20℃±5℃ for 2 hours. | |
| 4 | Constant Humidity & Temperature Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than180mins | Place a full charged battery under the environments of 40℃ and 90% - 95%RH for 48 hours. And keep it in the room temperature for 2 hours. Then discharge it at the current of 0.2C to the cut-off voltage. | |
| 5 | High & Low Temperature Storage | The battery should be no remarkable breakage, distortion. And charge/discharge normally | Place a full charged battery in a oven with 55±2℃ for2 hours, then keep it under 20±5℃ for 4hrs, then place it in a oven with -20±2℃ for 2 hours, then keep for 4 hours under 20±5℃, cycle as high temperature-normal temperature-low temperature-normal temperature-high temperature for 10 times | |
4.
Circuit Protection
The batteries are supplied with a LiFePO4 Battery Management System (BMS)that can monitor and optimized each single prismatic cell during charge & discharge, to protect the battery pack overcharge, over discharge, short circuit. Overall, the BMS helps to ensure safe and accurate running.
| Test item | Content | Criterion |
| Over charge | Over-charge protection for each cell | 3.90±0.03V |
| Over-charge release for each cell | 3.60±0.05V | |
| Over-charge release method | Under the release voltage | |
| Over discharge | Over-discharge protection for each cell | 2.30±0.05V |
| Over-discharge release for each cell | 2.80±0.05V | |
| Over-discharge release method | Above the release value | |
| Over current | Discharge over current protection | 400±100A |
| Protection delay time | 50~200ms | |
| Over current release method | Release after cutoff the load. | |
Battery temperature | Battery Over temperature | Protection @65±5℃, Release @55±5℃ |
| Charge lower temperature | Protection @-10±5℃, Release @0±5℃ |
Application:
· Energy Storage Systems (ESS)
· Hybrid Grid back-up
· Remote area power systems
· Communications systems
· Electric vehicles
· Marine environments
· Military & Aviation
· Industrial Machinery
· Uninterruptible Power Supplies
· CCTV & Data Transfer
Warranty
• We offer 3 years warranty for battery packs in low discharge rate
(below 1C) applications,
• We offer 2 years warranty for battery packs in high discharge
rate (1~3C) applications.
• For charger / BMS, here are one year warranty.
Store
◆For long time storage ,the battery should be charged to Approx 60% SOC ,its corresponding voltage should be 1.05times of nominal voltage(24V,36V,60Vor72V),usually it's voltage in shipment .The battery should be kept in storage in dry and ventilated place.
◆ The battery pack and charger should be stored in clean, dry and ventilated place, avoid contacting with corrosive materials and be away from fire and heat.
Quality Control
We do below test before delivering
Capacity test, High current discharge test,Low temperature test, Short circuit test, Over charging test,
Over discharging test, Cycle performance test, Crush test, Impact test, Vibration test, High temperature test
Our Services
• By Air Door to Door Service
• By Sea Door to Door Service
• By Express: EMS, TNT, UPS, FedEx
FAQ
1. What's your advantage?
Small order is acceptable, zero risk, quality assurance.
2. Can you accept OEM and ODM services?
Yes, just tell me your requirements and we will provide you with
the best solution.
3. What are your payment channels?
TT, L/C, West Union etc.
4. What service do you provide?
All our batteries have passed the safe test and performance test
before shipment.
Support printing your logo on the battery.
Small order is acceptable.
5. Is your lithium battery reliable?
Yes. Overcharged, over-discharged, nail penetration test, all
protected by our battery.
6. Can I get a lower price if I order large quantities?
Yes, very competitive prices with more quantity.
7. How you shipping the goods and how long it will take?
Normally FEDEX, DHL,UPS etc, around 4-7 days.
8. Can I just try samples for the first order?
Yes, 1 pcs sample and small trial order are acceptable.
24 hours customer service, waiting for your inquiry!
