Low Temperature LiFePO4 48V 70AH Lithium Solar Batteries for Solar Backup System
we produce a wide range of lithium batteries, suitable for various kinds of applications, such as for solar system, lawn mower, medical equipment, military. OUR GOAL: we offer safest and reliable batteries. OUR BELIEF: we Can deliver on time irrespective of the scale of your project. OUR MISSION: wur mission is to always move on in quality of products and dedication in after sales service to provide sustainable, innovative and cost effective solutions to world’s increasing battery needs.

Specifications
Item | Rating | Note | Model | VS4870NCM | | Battery pack description | 48V 70Ah Li-NCM battery pack | S-type BMS | Cell Type | | 10Ah Li-NCM cells | Assembly Description | Total 105 cells, as 15S7P arranged | 7 cells in parallel connection then 15 of those units in series connection | Battery pack Dimension (L*W*H) | 320*260*254 mm | Metal case with BMS built in | Battery pack Weight | 30.0 kg ± 0.5 kg | | Operation Voltage of battery pack | 48 V | | Charging Voltage of battery pack | ≤ 54.7V | | Discharge Cut-off Voltage, pack level | 36~ 37.5 V | | Discharge Cut-off Voltage, cell level | 2.5 V ± 0.05V | | Nominal Discharge Current | ≤ 70 A ( 23°C / 77°F) | | Maximum Discharge Current (Less than 1 minutes) | ≤ 140 A ( 23°C / 77°F) | | Pulse Discharge Current (Less than 15 seconds) | ≤ 160 A ( 23°C / 77°F) | | Nominal Charge Current | ≤ 30 A ( 23°C / 77°F) | | Operating Temperature | Charge: 0°C ~ 45°C Discharge: -20°C ~ 50°C | | Storage Temperature ( ≥ 3 months) | 15°C ~ 30°C | Keep battery SOC at 40~60% for long term storage. | |
Instructure
The battery pack has metal case for protection and BMS built inside. The whole pack has handle(s) for the lifting and carrying. For inside structure here are block type modules connected in series config with screws and busbars. Here are necessary foams among modules and BMS for isolation and vibration resistance
Battery care and maintenance
Please charge the battery timely after kept for more than 2 monthes so that the battery cycle life would be much
longer. The cycle life of li-ion battery would be shorted if the battery alway be kept as fully charged state. For
long time storage, keep the battery as 40~60% state of charge (SOC) and discharge and charge every one or two
monthes.
• Battery should be kept under dry and ventilation condition. Do not put the battery close to fire and explosive
products. When charging the battery, cut of the load.
• The best working environment of our lifepo4 battery is 15 ~ 40 °C, please take some necessary procedures, like
heating & cooling system, or use heat insulation materials to stop cold effect battery in winter.
• When the temperature is more than 75°C (Internal temperature of the battery), the battery cycle life would be
shorted. So do not exposure the battery under the sun during summer.
• When the temperature is under -20°C or lower, the battery performance would be effect and the mileage might
be shorted.
• Do not wash the battery shell with organic solvent. If there’s fire accident, please do not use CO2 to extinguish
the fire but use CCl4 or sand soil.
Applications
-
Solar energy Storage power
-
Mobility Devices , PC
-
Caravan and camping
-
UPS and Critical power
-
Medical Equipment
-
Electric scooters , electric vehicle , electric cars and so on

Product Advantage
- High power and energy densities up to 180wh/kg
- Cell life up to 3500 cycles,more than 80% remain
- Very low self discharge
- High performace at low temperature
- Thermal stability
- Lighter and smaller than lead acid battery.
- have handle for the lifting and carrying
Storage Conditions
◆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.
Transportation & Storage of Li-ion Battery Pack
• Fedex/DHL/UPS/TNT for sample . Door to Door
• By Air or by Sea for Bulk goods , for FCL . Airport Port receiving
• Customers specifying freight forwarders or negotiable shipping methods
• Delivery Time: 7-15 days for samples , 25-35 days for bulk goods time

RFQ
1: Do you provide samples ?
--Yes, we could offer the sample , pls show us your address and post code
2. What service do you provide?
--All our batteries have passed the safe test and performance test before shipment.
--accept put your logo on the battery
3. what's the payment
-- We accept the T/T / LC / PALAPY Payment
4. What's your lead time
-- Our lead time is 5-10 days for the sample orders , 20-35 days for the bulk order
24 hours customer service, waiting for your inquiry!

Quick delivery
Fast delivery is key factor for clients to compete in the market. We attach much importance to quick delivery as much
as we do in our LiFepo4 lithium battery quality. We will keep our clients updated with tracking number all the time and latest tracking info until the order of LiFePO4 lithium Battery arrives at our clients safely.
Quick delivery
Fast delivery is key factor for clients to compete in the market. We attach much importance to quick delivery as much
as we do in our LiFepo4 lithium battery quality. We will keep our clients updated with tracking number all the time and latest tracking info until the order of LiFePO4 lithium Battery arrives at our clients safely.
Packing and shipping
• Fedex/DHL/UPS/TNT for sample . Door to Door
• By Air or by Sea for Bulk goods , for FCL . Airport Port receiving
• Customers specifying freight forwarders or negotiable shipping methods
• Delivery Time: 7-15 days for samples , 25-35 days for bulk goods time
Packing and shipping
• Fedex/DHL/UPS/TNT for sample . Door to Door
• By Air or by Sea for Bulk goods , for FCL . Airport Port receiving
• Customers specifying freight forwarders or negotiable shipping methods
• Delivery Time: 7-15 days for samples , 25-35 days for bulk goods time
Packing and shipping
• Fedex/DHL/UPS/TNT for sample . Door to Door
• By Air or by Sea for Bulk goods , for FCL . Airport Port receiving
• Customers specifying freight forwarders or negotiable shipping methods
• Delivery Time: 7-15 days for samples , 25-35 days for bulk goods time
Advantages of battery:
Advantages of battery:Longer Cycle Life: Offers up to 20 times longer cycle life and five times longer float/calendar life than lead acid battery, helping to minimize replacement cost and reduce total cost of ownership.
Lighter Weight: About 40% of the weight of a comparable lead acid battery. A 'drop in' replacement for lead acid batteries.
Higher Power: Delivers twice power of lead acid battery, even high discharge rate, while maintaining high energy capacity.
Superior Safety: Lithium Iron Phosphate chemistry eliminates the risk of explosion or combustion due to high impact, overcharging or short circuit situation.
Increased Flexibility: Modular design enables deployment of up to four batteries in series and up to ten batteries in parallel.
Wider Temperature Range: -20℃~60℃.