Henan Duxin Science Technology Co.,Ltd.
Henan Duxin Science Technology Co.,Ltd.
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Multi Function Floor Sweeper Battery 24V 200AH Low Self - Discharge
1. General Information
This specification defines the performance of rechargeable LiFePO4 battery pack describes the type, performance, technical characteristics, warning and caution of the battery 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
Product advantage
a. Life 2000 cycles, more than 85%.
b. Large overcharge tolerance and safer performance.
c. Self balance.
d. Four times higher energy density than Lead-acid battery.
e. Light weight and smaller than Lead-acid battery.
f. High temperature performance.
g. Low self discharge
3.
Battery Pack Electrical Characteristics
2.1 Testing Conditions (Unless Specially Requirements)
Temperature:20±5℃ Related Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
The testing items under the Shipment Voltage
2.2 Battery Pack Electrical Characteristics
| No. | Items | Standards | Testing Methods |
| 1 | Internal Impedance | Impedance ≤20mΩ | Under 20±5℃ Environment Temperature , the Usage Frequency of Fully Charge( 1KHz) , Use AC Internal Impedance test machine to test |
| 2 | Nominal Capacity | 200Ah | 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 | No load ability after short-circuit .comeback capability of loading after remove the lead away, | Short the pack with the lead (<50mΩ). If remove the lead away, connect the electronic loader with P+, P- of protection board again, so load ability comes back. |
| 4 | Allowed Maximum continuous charge Current | 200A | charging with 200A for more than 0.5h and the added temperature of battery pack less than 20℃. |
| 5 | Allowed Maximum continuous discharge Current | 200A | Discharging with 200A for more than 0.5h and the added temperature of battery pack less than 20℃. |
| 6 | Over Current Protection | 500-800A | Using electron load connect with output side, discharge with 500A for about 2sec Discharge with 800A for less than 20 millisecond, | |||
| 7 | the delay time of over current protection | 10.0-50.0ms | Using electron load connect with output side, discharge with more than 800A and record the voltage wave of output side with oscillograph . Numerating the time of voltage from wave to zero for voltage | |||
| 7 | cycle life | Discharge Capacity ≥80% | Discharge it with the current of 50A to the cut-off voltage, and store it for 15min.Charge a battery with the current of 50A, 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 20A. | |||
| 8 | 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 of20A to the cut-off voltage and record charge capacity. Store the battery at the following temperature for 2h and discharge the battery with 20A to the cut-off voltage. | |||
| Discharge Current | Discharge Temperature | |||||
| -20℃ | 0℃ | 25℃ | 55℃ | |||
| 0.2C | 60% | 80% | 100% | 95% | ||
| 9 | Charge Retention | remain capacity≥90% | At 20±5℃ completely charge and store it for 28days,and then discharge it with 20A to the cut-off voltage. (We suggest charge the battery every three months) | |||
| 10 | Over Discharge Protection furbish | Charging With20A | Charge the battery with 20A for 5min and measure the output voltage (≥16V)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
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 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 20A with the load of 30Ω for 24h . Charging for 10sec with specified adapter , and check the voltage(≥16.0V) |
| 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 |
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±50A |
| Protection delay time | 50~200ms | |
| Over current release method | Release after 8s. | |
| Over & Lower Temperature | Battery over temperature | Protection @65±5℃ |
| Release @55±5℃ | ||
| Battery Lower temperature @charging | Protection @-5±5℃ | |
| Release @5±5℃ |
Applications
· 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!