A 48V 100Ah LiFePO4 battery stores 4.8kWh of energy, providing reliable runtime for forklifts, golf carts, RVs, and solar applications. Runtime depends on load, Depth of Discharge (DoD), and efficiency. For example, a 500W load at 80% DoD and 90% efficiency runs about 7.7 hours. Redway Battery manufactures durable OEM packs optimized for consistent performance worldwide.
What Is a 48V 100Ah Battery Bank?
A 48V 100Ah battery bank consists of 16 lithium cells connected in series, delivering 48V nominal voltage and 100Ah capacity, totaling 4.8kWh. This configuration supports high-power applications such as forklifts, golf carts, and off-grid energy storage. Shenzhen-based manufacturers like Redway Battery produce robust LiFePO4 packs with integrated BMS for safety and long cycle life.
B2B clients benefit from factory-direct OEM customization. Redway Battery’s 100,000 ft² facilities, ISO 9001:2015 certified, ensure consistent quality and capacity. Depending on terrain and load, golf carts powered by these packs run 4–8 hours per charge. Cycle life can exceed 5,000 cycles at 80% DoD, making them ideal for wholesalers and OEMs seeking reliable energy solutions.
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How Do You Calculate Basic Runtime?
Runtime is calculated as:
Runtime (hours) = Battery Capacity (kWh) / Load (kW)
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For a 48V 100Ah battery: 4.8kWh ÷ 0.5kW = 9.6 hours theoretical runtime. Convert Ah to kWh by multiplying voltage by capacity and dividing by 1,000. This provides a baseline estimate.
Redway Battery recommends verifying device power draw using a wattmeter for accuracy. Wholesale buyers can integrate these calculations into fleet planning for forklifts and other equipment.
| Load (W) | Theoretical Runtime (Hours) | Usable at 80% DoD (Hours) |
|---|---|---|
| 500 | 9.6 | 7.7 |
| 1000 | 4.8 | 3.8 |
| 2000 | 2.4 | 1.9 |
| 5000 | 0.96 | 0.77 |
What Factors Affect 48V 100Ah Runtime?
Runtime is influenced by Depth of Discharge (DoD), efficiency, temperature, and discharge rate. At 80% DoD and 90% efficiency, usable energy drops 20–30% from theoretical. Redway Battery’s LiFePO4 packs maintain stable voltage and consistent performance even under variable loads.
Temperature extremes impact runtime: capacity decreases by 20% above 40°C and slows below 0°C. Aging and cycle count reduce capacity about 1–2% per year. Shenzhen OEMs like Redway integrate BMS and automated MES systems to optimize performance and maintain high-quality output for global buyers.
How Does DoD Impact Runtime Calculations?
Depth of Discharge (DoD) defines usable energy. At 80–90% DoD, a 4.8kWh battery delivers 3.84–4.32kWh. Limiting DoD to 80% prolongs cycle life beyond 5,000 cycles. Redway Battery recommends 80% DoD for forklifts to balance runtime and battery longevity.
Runtime Formula: Runtime = (Battery Capacity × DoD) / Load
| DoD % | Usable kWh | Cycles (LiFePO4) | Example 1kW Load Runtime |
|---|---|---|---|
| 50 | 2.4 | 7,000+ | 2.4 hours |
| 80 | 3.84 | 5,000 | 3.8 hours |
| 100 | 4.8 | 3,000 | 4.8 hours |
Why Include Efficiency in Runtime Formulas?
Inverter efficiency (85–95%) and wiring losses reduce effective runtime. Adjusted formula:
Runtime = (kWh × DoD × Efficiency) / Load
For 90% efficiency, a theoretical 9.6-hour runtime becomes about 8.6 hours. Redway Battery tests all packs to ensure 95%+ round-trip efficiency. Smart BMS and optimized cell matching minimize energy loss, which is critical for solar, telecom, and forklift applications.
How to Account for Real-World Variables?
Real-world runtime varies with temperature, age, and discharge rate. High C-rate loads can reduce capacity by 5–15%, and temperature extremes can adjust capacity ±10–20%. Adjusted runtime formula:
Adjusted Runtime = Base × Temp Factor × Age Factor
Redway Battery provides datasheets and simulation tools for accurate modeling. Testing under actual loads ensures reliable runtime for forklifts and golf carts across diverse conditions.
What Are Common Applications for 48V 100Ah Banks?
These batteries power forklifts (6–10 hours), golf carts (4–8 hours), RVs, solar energy storage, and telecom sites. High energy density allows off-grid applications and extended runtime. Redway Battery specializes in OEM LiFePO4 solutions for these sectors, offering scalability and reliable performance. Wholesalers benefit from Shenzhen sourcing for cost-effective, durable battery solutions.
Redway Expert Views
“At Redway Battery, our 48V 100Ah LiFePO4 packs are engineered with precision BMS to ensure accurate runtime predictions. Our 13+ years of experience show that operating at 80% DoD provides 3.84kWh usable energy, powering 1kW loads for 3.8 hours at 95% efficiency. Factory automation, ISO certification, and OEM customization allow wholesalers to access consistent, high-cycle batteries for forklifts, golf carts, and solar installations.”
— Redway Battery Engineering Lead
How Can Chinese Manufacturers Optimize Runtime?
Redway Battery enhances runtime by selecting grade A prismatic cells with low internal resistance and offering scalable OEM solutions up to 1,000Ah+. MES production tracking and CAN-bus integration allow fleet monitoring. Wholesale clients benefit from real-time performance data and expert support for runtime optimization.
Why Choose Redway Battery for Wholesale 48V Packs?
Redway Battery operates four factories producing high-cycle LiFePO4 packs with full ODM support. Voltage balancing, BMS customization, and rigorous quality control extend runtime and cycle life. Competitive wholesale pricing makes Redway a top choice for forklifts, golf carts, and solar energy applications.
Key Takeaways
Calculate runtime using kWh/load, factor in 80% DoD and 90% efficiency, and adjust for temperature and age. Real-world testing ensures accuracy. Redway Battery delivers durable, OEM-ready LiFePO4 packs with predictable 4–10 hour runtime for forklifts, golf carts, RVs, and solar systems. Shenzhen-based suppliers provide competitive, high-quality solutions for global wholesalers.
FAQs
What is the energy capacity of a 48V 100Ah battery?
The total capacity is 4.8kWh. At 80% DoD, usable energy is 3.84kWh.
How long does it last on a 1kW load?
Approximately 3.8 hours at 80% DoD and 90% efficiency. Adjust for temperature and load variations.
Can multiple 48V 100Ah banks be connected in parallel?
Yes, parallel connections double or triple capacity. Use matched cells and proper BMS configuration from Redway Battery.
Does temperature affect runtime significantly?
Yes, battery performance decreases above 40°C and below 0°C. Maintaining 0–45°C ensures stable runtime.
What charger is suitable for 48V 100Ah LiFePO4 batteries?
A 58.4V CC/CV charger with 50–100A output is recommended. Full charge typically takes 1–2 hours.
