Dear valued customer,
We are an manufaturer specialized in Lifepo4 & Ncm lithium battery used for EV,E-Bike,Golf Car,Mail Truck,UPS and solar energy storage.
Customization is available.
Lithium polymer battery modules in parallel or in series, can be used in electric vehicle,
E-bike, UPS, energy storage system, telecommunication base station, E-scooter, E-tools,
unmanned airplane, golf cart, fork lift, cleaning car , electric wheelchair, etc.
1. Battery Parameter
We have battery packs from 12v to 400v with 12ah to 200ah, here taking 72v 40ah as an example.
Pictures of 72V 40Ah lithium polymer battery pack
Product specification:
| 51.2V 200Ah lithium LiFePO4 battery pack specification | ||
| Mechanical | Cell & Method | LiFePO4, 16S6P |
| Dimension(D*W*H) | 920 x 147 x 275 mm | |
| Weight | 70KG | |
| Electrical Characteristics | Rated Capacity | 200Ah |
| Min Capacity | 198Ah | |
| High Rate Discharge Capacity | > 90% Rated Capacity | |
| Discharge Capacity @ -20ºC(-4ºF) | > 70% Rated Capacity | |
| Norminal Voltage | 51.2V | |
| Energy | 10240Wh | |
| Internal Impedance(@ 1000Hz.) | ≤25 mΩ | |
| Cycle Life | >8000 Cycles @ 1C 80% DOD | |
| Months Self Discharge | ≤ 5% @ 25ºC(77ºF) | |
| Efficiency of Charge | 100% @ 1/3C | |
| Efficiency of Disharge | 95% @1C | |
| Standard Charge | Max Charge Voltage | 58.4V |
| Charge Current | 1/2C, 100A | |
| Max Charge Current | 200A | |
| Standard Discharge | Standard discharge Current | 200A |
| Max Discharge Current | 3C, 600A | |
| Discharge Cut-off Voltage | 40V | |
| Environmental | Charge Temperature | 0 ºC to 45ºC(32ºF to 113ºF) @ 65±20%Relative Humidity |
| Discharge Temperature | -20ºC to 60ºC(-4ºF to 140ºF) @ 65±20%Relative Humidity | |
| Storage Temperature | ≤ 1 Month, -20ºC to 60ºC(-4ºF to 140ºF) @ 65±20%Relative Humidity | |
| ≤ 6 Month, -20ºC to 30ºC(-4ºF to 80ºF) @ 65±20%Relative Humidity | ||
2. Main Features of Our EV Battery Cells
1. High energy density
| lifepo4 battery cell | LiNiCoMn battery cell (ab.NCM battery) | |
| weight energy density | 150wh/kg | 200wh/kg |
| volume energy density | 280wh/L | 334wh/L |
2. Low internal resistance
Methods of reducing the internal resistance:
**Using carbon coated aluminum foil
**Multiple electrode tab design
**Increasing the width of electrode tab
**Coating PVDF on battery separator
**Pore-creating artificially
3.Long lifespan
Usable for more than 2,000 charge-discharge cycles
> 4 times than lead acid battery
> 2 times than li ion battery
4.Excellent performance in high and low temprature
Usable in extremely cold and hot environments (-20 to 60 ºC)
CTS cell's performance and Application
Safety Performance
Item | Test name | Result |
1 | Over charge | No fire,no explosion |
2 | Over discharge | No fire,no explosion |
3 | Short Circuit | No fire,no explosion |
4 | Drop | No fire,no explosion,no leakage |
5 | Hot oven | No fire,no explosion |
6 | Crush | No fire,no explosion |
7 | Needle puncture | No fire,no explosion |
All of CTS battery cells in a pack are with very high consistency.In a pack, each cell has its ownsole electronic code(ID number) for quality control after-sale. Assume one cell in a pack is damaged in any reason after several years later, we could provide a exactly same cell to the client to replace this damaged one(same voltage, capacity, impedance,etc.), in order to make sure all of the cells in this pack with very high consistency. Melsen has a strong system working for this.
Battery assembly process
Each battery module in parallel is fixed with steel parts,then put them together by pull rob.After this,there are covers to protect battery with case and BMS.
About CTS
Do the batteries have a warranty?
§ Yes, currently 3 years; extended warranties are also available.
How long do the batteries last?
§ 10 years / 200,000 KM (124,275 miles) [calculated based on 100km battery pack]
§ 2000 charges & discharges at 100%.
§ This means approximately 10 years of normal use 200,000 KM. (124,275 miles)
§ Normal use is defined as 20,000km/year. (12,500 miles/year)
Do you use Lead Acid Batteries?
NO WE DO NOT! Our reasons:
§ Lead Acid Batteries do not allow as many charge & discharge cycles as advanced lithium batteries
§ Lead Acid batteries degrade after 300 charge cycles in an electric car until they expire, approximately 1.5 -2 years of driving
§ Not cost effective to change your battery pack every two years
§ Lead Acid is HEAVY, and reduces your range, doesn't supply continuous power
Customer Feedback
We are happy with your battery quality. I've also been very happy with your good support,
let's continue discussions and work on more,tks.----Michael (from Berlin,Germany)
I wanted to thank you for your help. The battery pack tested at over 100AH with over 5400Watt hours! It ran two home refrigerators (one is in my hot garage with no A/C) and my 65" TV for about 20 hours! --- Tom (From L.A USA)
I am thrilled to have a superior pack from your company! --- David (From Melbourne Australia)
Order information
Sample is avaliable and welcome.
Trade term: FOB Shenzhen or Guangzhou; EXW, CIF,DDU and DDP are available.
Delivery time: 7 working days for sample order, 15- 25 working days for mass order.
Market Manager: Barry Chan
