OVERVIEW
FEATURES
N series rechargeable lithium battery using prismatic battery cells with more advantages as following:
● High energy density
● Low self discharge
● Light weight, small size
● Long cycle life
● No memory effect
● High discharge rate
● Polution-free
● High working voltage for single battery cell
● With short-circuit protection function, safe and reliable
● Good consistency at votlage, capacity, resistance and platform time
● Quality and security guaranteed with CE approval
● The lifepo4 battery pack is widely used for golf cart, electric bike, electric wheelchair, electric scooter, emergency light etc.
INTERNAL STRUCTURE
Polinovel caring every details of the Novel series lithium battery pack to assure you get more safe and durable battery using experience:
Aluminum Shell Prismatic Battery Cells with Higher Capacity Screw Fastening Connection by Metal Straps
Built-in BMS Mounted on Side of Battery Structure White Rubber Sheet Added On Bottom as a Cushion to Battery
SPECIFICATIONS
| Items | Parameter |
| Battery Type | LiFePO4 |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 80Ah |
| Energy | 1.024KWh |
| Internal Resistance | ≤20mΩ |
| Series & Parallel Application | up to 4 series 4 parallel connected application |
| Recommended Charge Voltage | 14.6±0.2V |
| Floating Charge Voltage | 13.8±0.2V |
| Charge Method | CC/CV |
| Discharge Cut-off Voltage | 10.0V |
| Standard Charge Current | 50A |
| Max. Charge Current | 80A |
| Standard Continuous Discharge Current | 80A |
| Max. Continuous Discharge Current | 100A |
| Pulse Discharge Current (<3s) | 200~400A |
| Cycle Life | >2000 cycles |
| Dimension | Length: 318±2mm |
| Width: 165±2mm |
| Height: 215±2mm |
| Weight | 14.0±0.2Kg |
| Operation Temperature Range | Charge: 0~45℃; |
| Discharge: -20~60℃ |
| Recommended operating temperature: 15℃~35℃ |
| Self-Discharge Rate | Residual capacity: ≤3%/month; ≤15%/years |
| Reversible capacity: ≤1.5%/month; ≤8%/years |
| Storage Temperature & Humidity Range | Less than 1 month: -20℃~35℃, 45%RH~75%RH |
| Less than 3 months: -10℃~35℃, 45%RH~75%RH |
| Recommended storage environment: 15℃~35℃，45%RH~75%RH |
PERFORMANCE
Items | Parameter | Testing Condition |
Rated Capacity | 80Ah | Rest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the discharge cutoff voltage. Repeat above process for three times, if the discharge time is not less than 120 minutes, you can stop and define the Discharging current*time value (Ah) as battery capacity. |
Minimum Capacity | 75Ah |
Internal resistance | ≤20mΩ | 50% battery SOC state frequency of 1 KHZ ac resistance tester |
Cycle life (DOD100%) | ≥2000cycle | Discharge with the current of 0.33C until it can’t discharge, and then rest it for 1h. Charge the battery following CC(0.33C)/CV(14.6V) mode to full capacity, and then rest it for 1h. Repeat above process until full charged capacity is no more than 80% of normal value. Accumulated times is defined as cycle life. |
Discharge Temperature Characteristics | -20℃ | ≥70% | At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage and record charge capacity. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage. |
-0℃ | ≥80% |
25℃ | ≥100% |
55℃ | ≥95% |
Charge Retention Ability | Residual capacity ≥80% | Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage. |
Recovery capacity ≥90% |
BMS
The lithium batteries are supplied with Battery Management System that can monitor and optimize each single cell during charge and discharge, to protect the battery pack from damage agains over-charge, over-discharge, short circuit. The BMS helps to ensure safe and accurate running.
Items | Content | Specification |
Over Charge | Over-charge protection for each cell | 3.9±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 | 2.0±0.05V |
Over-discharge release for each cell | 2.5±0.05V |
Over-discharge release method | Charge to recovery |
Over Current | Over discharge current protection | 300A~500A |
Protection delay time | 50ms～200ms |
Over current release method | Delay about 30S after recovery |
Short Circuit | Do not short-circuit the electrodes | Designed for 500A~750A/500us
|
Battery Temperature | Charge over temperature | Protection @ 65±5℃ |
Release @ 50±5℃ |
Discharge over temperature | Protection @ 65±5℃ |
Release @ 50±5℃ |
MOSFET over temperature | Protection @ 103±10℃ |
Release @ 75±10℃ |
DIMENSION DRAWING
Polinovel N Series lithium battery are deveoped basing on same battery case size that are pefect to replace conventional VRLA batteries:
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