Gold Member Since 2009
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OptimumNano Energy Co., Ltd.

Solar Battery 12V 300ah, Lithium Batteries, Batteries for Solar Energy manufacturer / supplier in China, offering UL CE Ice Un38.3 Certificate 12 V 300ah LiFePO4 Battery, Wo-Power Box Rechargeable 7.2kwh Powerwall Energy Storage System, Wo-Power Box 7.2kwh Scalable Core Battery Energy Storage System Ess and so on.

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Supplier Homepage Product LiFePO4 for Transportation (EV,HEV,e-bike,e-boat,etc) UL CE Ice Un38.3 Certificate 12 V 300ah LiFePO4 Battery

UL CE Ice Un38.3 Certificate 12 V 300ah LiFePO4 Battery

Purchase Qty.:
1-2,999 3,000+
FOB Unit Price: US $1,500 US $2,000
Purchase Qty. (Pieces) FOB Unit Price
1-2,999 US $1,500
3,000+ US $2,000
Get Latest Price
Production Capacity: 500pks/Day
Transport Package: Carton/Sooden Case/Standard Epxort Package
Payment Terms: T/T, Paypal, Western Union

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Basic Info
  • Model NO.: OPT12300
  • Usage: Car, Bus, UPS, Electric Power, Lighting, Electric Bicycle, Boat, E-Tools
  • Discharge Rate: High Discharge Rate
  • Electrolyte: LiFePO4
  • Rechargeable: Chargeable
  • Components: Li-ion/Lithium Iron Phosphate Battery/LiFePO4
  • Size: Customized
  • Application: UPS, Solar/Wind System, Energy Storage, E-Tool
  • Oversea Market: Europe, South America, Middle East, etc
  • Warranty Period: 2 Years
  • Specification: CE, UL, ROHS, BV, SGS, ISO9001, TS16949
  • HS Code: 85078020
  • Type: Lithium-Ion Batteries
  • Nominal Voltage: 12V
  • Shape: Customized
  • Installation: Lithum Iron Phoshate Battery
  • Brand Name: Optimum
  • Model Number: 12V 300ah
  • Certificates: CE, UL, RoHS, BV, SGS, ISO9001, Ts16949
  • Maintenance Type: Free
  • Cycle Life: at Least 2000 Times
  • Trademark: optimum
  • Origin: Shenzhen, China
Product Description
UL, CE, ROSH Approval solar battery 12V 300Ah

High safety
Long cycle life
Smaller and lighter
No memory effect
Environmental friendly
Maintenance Type: Free
High power, no pollutions
CE, UL, RoHS, BV, SGS, ISO9001, TS16949
Oversea market: Europe, south America, Middle East, etc

Basic Specification:

Rated voltage: 12V
Rated capacity: 300Ah
Standard charge current: 50A
Standard discharge current: 50A
Max charge voltage: 14.6V
Cut-off voltage: 10V
Charge method: CC&CV

1. Extremely safe: The chemical structure of LiFePO4 is very stable BMS or PCB built inside to protect the battery over charge and discharge.
2. Long life-cycle: 5~7 years / 2000 times cycle life.
3. Lighter and smaller: 1/3 weight of lead acid battery, 70% size/weight of Ni-MH/Ni-CD battery.
4. Wide operating temperature: High temperature resistance(-20~70 degrees Celsius).
5. Steady performance: High power output, 1C continuous, 3C pulse for normal cells Low self-discharge rate, less than 3% monthly.
6. No memory effects and highly efficient charge: It can be recharged anytime, no reduction of the capacity
7. Green product: Environment friendly, clean and green energy, no pollution on our environment.
8. Quality assurance: BV and SGS approved supplier, with TS16949 and ISO9001 quality management certificates and UL, CE, IEC62133 etc...Product certificates.

Quality features of OPTIMUM LiFePO4 battery pack
In optimum, each cell and pack is produced with the principle "conformity in 8 aspeacts and 3 inspections in 3 stages", the high stability and reliability can be guaranteed.
"Conformtity in 8 aspects" is a principle developed by OPTIMUM engineers in production and inspection process. The application of it ensures conformity of packs and improves service term of pack obviously.

Confirmity in 8 aspects principle
Conformity in capacity
2...Conformity in impedance
3. Conformity in self-discharging
4. Confirmity in voltage (soc)
5. Confirmity in discharge stage
6. Confirmity in Charge CC ratio
7. Confirmity in cycle life
8. Conformity in batch number

3 inspections in 3 stages
Battery assembly, paralleled modules, finished packs

          rechargeable lithium battery pack 12v 300ah for ups/backup
Battery PACK Parameters :
Battery MaterialLiFePO4
Nominal Voltage (V)12  V
Nominal Capacity (Ah)300 Ah
Max Discharging Current100A

Maximum Charge Voltage3.65V~3.80 V
Discharge cut-off voltage2.0V~2.3V
Charging Current50 Amps
Weight (NW)42 Kg
Lifecyclemore than 2000 times
Dimension520*269*220 mm /customized
Other size : can be designed if you are prefer to cover by PVC film instead of ABS plastic case.
BMS System Parameters :
Overcharge protection (V)3.900 ±0.025
Overcharge Recovery (V)3.800 ±0.030
Over-discharge voltage (V)2.000  ±0.050
Over-discharge Recovery
2.300   ±0.050
Short Circuit Protection Recoverydisconnected load automaticly
Charge balanced current (mA)0.03A-0.05A
Charger Parameters :
Applying Battery TypeLiFePO4
Input Voltage (AC/V)110V or 220V 50Hz
Output Current (A)60 A
Output Voltage (DC/V)≤ 14.6 V

Package includes:
1 × LiFePO4 Battery Pack 
1 × BMS or PCM
1 × 60A Charger (according to your actual demand)
1 ×  battery maintenance instruction

LiFePO4The world's most secure battery, no explosion, no pollution, long lifeExcellent Cycle life can be as long as over 2,000 cycle, best among all the listed groups.AcceptableExcellent
Most economic
Excellent (can be discharged at -45~ 70 Centigrade)
LiCoO2LiCoO2 is expensive, the actual capacity than its theoretical capacity of only (274mAh g-1) about 50%, lower utilization of cobalt; LiCoO2 cycle life has reached 500Acceptable Cycle life only up to 300~500 cycle. Not good for high C-rate discharge.GoodHighDecayed beyond 55 ~ -20 Centigrade
LiMn2O4Have to handle with care, or it might explode or catch fire under collision or over-charged.Unacceptable Cycle life only up to1 500~800 cycle, depending on the discharge C-rate.AcceptableAcceptableHigh
Li(NiCo)O2Very unstable, must handle with extremely care, it might explode or catch fire under collision, over-charged, short circuit or when heat build-up.Acceptable Cycle life can be 300~500 cycle. Not good for high C-rate discharge.GoodHighDecayed extremely fast over 55~ -20 Centigrade
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Miss Cicada Ma
Sales Engineer
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