Golf Carts | E-Bikes | Robots | Start-Stop Systems
Different applications demand different battery behaviors.
A golf cart doesn’t draw current the same way an e-bike does. A service robot doesn’t have the same voltage platform as a start-stop automotive system. That’s why “one-size-fits-all” batteries fail in professional environments.
A properly engineered custom battery pack ensures that:
Voltage & capacity match your real operating load
Peak discharge current meets motor or actuator requirements
Cycle life aligns with your usage frequency
Thermal behavior remains safe and stable
Mechanical shape fits your actual device or vehicle
The BMS communicates correctly with your controller (CAN/UART/RS485)
Whether your system needs long runtime (golf cart), lightweight power density (e-bike), 24/7 reliability (robots), or strong cold-cranking performance (start-stop applications), a custom battery pack ensures the highest performance, safety, and longevity for your device.
We design and manufacture custom lithium battery packs tailored to your exact specifications—from high-power cylindrical cells to solid-state and waterproof modules.
Versatile, proven, and widely available—perfect for general-purpose battery needs.
18650 packs remain a favorite for OEMs needing reliable, flexible, and cost-effective solutions.
✅ Panasonic, Samsung, LG cell options
✅ Easy to configure in various voltages/capacities
✅ Great for maintenance or drop-in replacements
| Pack Name | Configuration (S/P) | Nominal Voltage | Max Voltage | Capacity Range | BMS Current | Main Applications |
|---|---|---|---|---|---|---|
| 12V Battery Pack | 3S / 4S | 11.1V / 12.8V | 12.6V / 14.6V | 2.6–30Ah+ | 5–50A | Lighting, UPS, portable devices |
| 24V Battery Pack | 7S / 8S | 25.9V / 29.6V | 29.4V / 33.6V | 5–40Ah+ | 10–50A | Robotics, PTZ cameras, portable inverters |
| 36V Battery Pack | 10S | 37V | 42V | 5–25Ah+ | 15–60A | Power tools, e-scooters, e-bikes |
| 48V Battery Pack | 13S | 48.1V | 54.6V | 10–40Ah+ | 20–70A | E-bikes, e-motorcycles |
| 52V Battery Pack | 14S | 51.8V | 58.8V | 10–40Ah+ | 20–70A | High-performance e-bikes |
| 60V Battery Pack | 16S | 59.2V | 67.2V | 15–50Ah+ | 30–100A | E-motorcycles, special vehicles |
We use premium A-grade 18650 cells to ensure the best performance, safety, and cycle life for your battery packs. Below are our commonly used cells for custom 24V, 36V, 48V, 52V, and 60V battery systems.
| Cell Model | Chemistry | Nominal Voltage | Nominal Capacity | Max Continuous Discharge | Cycle Life* (to 80% SOH) | Typical Use |
|---|---|---|---|---|---|---|
| LG HG2 INR 18650 | NMC (INR) | 3.6–3.7 V | 3000 mAh | 20 A | 300–500 cycles | Power tools • e-bike packs (36/48/52 V) |
| Samsung 35E INR 18650 | NCA (INR) | 3.6–3.7 V | 3500 mAh | 8 A | 500–800 cycles | Long-range e-bikes • portable power • backup systems |
| Epoch 18650 (Energy) | NMC / NCA | 3.6–3.7 V | 3200–3500 mAh | 8–10 A | 500–800 cycles | Energy-focused 24/36/48 V packs |
| High Capacity 18650 (Generic A-grade) | NMC | 3.6–3.7 V | 3000–3500 mAh | 5–10 A | 500–800 cycles | General purpose • e-bike • robotics • UPS |
| High-Drain 18650 (Generic A-grade) | NMC / NCA | 3.6–3.7 V | 2500–3000 mAh | 15–25 A | 300–600 cycles | High-power e-scooter • e-motorcycle |
| Bulk 18650 Cells (OEM/ODM) | NMC / LCO (by request) | 3.6–3.7 V | 2600–3500 mAh | 5–20 A | 300–800 cycles | Mass production for 24/36/48/52/60 V packs |
Note: Most quality 18650 cells are 3000–3500 mAh. Larger capacity is achieved via parallel configurations (e.g., 10s4p, 14s5p).
Power-dense and compact, ideal for high-performance mobility.
21700 lithium battery packs deliver up to 50% more energy than 18650 packs in the same footprint, making them perfect for modern eBikes, power tools, and robotics.
✅ High discharge current support (10A–20A per cell)
✅ Long cycle life (>1000 cycles)
✅ Compact pack sizes for tight enclosures
| Pack Name | Configuration (S/P) | Nominal Voltage | Max Voltage | Capacity Range | BMS Current | Main Applications |
|---|---|---|---|---|---|---|
| 4S 21700 Battery Pack | 4S (P-count variable) | 14.8V | 16.8V | 4–30Ah+ | 5–30A | Medical, UPS, drones |
| 6S 21700 Battery Pack | 6S (P-count variable) | 22.2V | 25.2V | 6–40Ah+ | 10–40A | Robotics, portable inverters, light EVs |
| 7S 21700 Battery Pack | 7S (P-count variable) | 25.2V | 29.4V | 7–50Ah+ | 10–50A | Industrial robots, solar storage, e-scooters |
| 10S 21700 Battery Pack | 10S (P-count variable) | 36V | 42V | 10–60Ah+ | 15–60A | E-bikes, scooters, power stations |
| 12S 21700 Battery Pack | 12S (P-count variable) | 43.2V | 50.4V | 12–60Ah+ | 20–70A | High-torque e-bikes, industrial machines |
| 13S 21700 Battery Pack | 13S (P-count variable) | 48V | 54.6V | 13–70Ah+ | 20–80A | Cargo e-bikes, motorcycles |
| 14S 21700 Battery Pack | 14S (P-count variable) | 52V | 58.8V | 14–80Ah+ | 20–90A | High-performance e-bikes, off-road |
| 16S 21700 Battery Pack | 16S (P-count variable) | 60V | 67.2V | 16–100Ah+ | 30–100A | E-motorcycles, utility vehicles |
| 20S 21700 Battery Pack | 20S (P-count variable) | 72V | 84V | 20–120Ah+ | 40–120A | Electric motorcycles, EV modules |
We use A-grade 21700 cells only. Pick high-drain (Molicel P42A / P45B, Samsung 40T / 30T) for power, or high-capacity (Samsung 50E / 50S, LG M50 series, Panasonic NCR21700A, EVE 21700, Lishen LR2170LA) for runtime. We also supply protected cells for flashlights ( Fenix 21700 battery ARB-L21-5000/5000U, Olight 21700 battery, Nitecore 21700 ).
| Cell / Model | Chemistry | Nominal Voltage | Nominal Capacity | Max Continuous Discharge | Typical Use |
|---|---|---|---|---|---|
| Molicel INR21700 P42A | NMC | 3.6–3.7 V | 4200 mAh | 45 A | High-power e-bikes, tools, UAVs |
| Molicel INR21700 P45B | NMC | 3.6–3.7 V | 4500 mAh | 45 A | High-performance scooters/motorcycles |
| Samsung INR21700-40T | NMC | 3.6–3.7 V | 4000 mAh | 35–45 A | High-drain tools, acceleration bursts |
| Samsung INR21700-50E (50E/50E2) | NCA/NCM | 3.6–3.7 V | 5000 mAh | ~10 A | Long-range e-bikes, 21700 powerbank |
| Samsung INR21700-50S | NCA/NCM | 3.6–3.7 V | 5000 mAh | 20–25 A | Balanced energy + power |
| Samsung INR21700-30T | NMC | 3.6–3.7 V | 3000 mAh | 35–45 A | Peak-current/torque devices |
| LG INR21700 M50 Series (M50LT/M50T/M50L) | NMC | 3.6–3.7 V | 4800–5000 mAh | 7–10 A | Energy-oriented packs, ESS |
| Panasonic NCR21700A | NCA | 3.6–3.7 V | ~5000 mAh | 8–10 A | Long runtime, low–mid current |
| EVE 21700 (Energy/Power) | NMC/NCA | 3.6–3.7 V | 4800–5000 mAh | 8–15 A | E-mobility, UPS, light EV |
| Lishen LR2170LA | NMC | 3.6–3.7 V | 4800–5000 mAh | 7–10 A | General 21700 lithium packs |
| Fenix ARB-L21-5000 / 5000U | Protected Li-ion | 3.6–3.7 V | 5000 mAh | ~10 A | Flashlights (best 21700 battery for flashlight) |
| Olight 21700 Battery 5000mAh | Protected Li-ion | 3.6–3.7 V | ~5000 mAh | Device-specific | Olight-compatible lights |
| Nitecore NL2150 / NL2150HPi | Protected Li-ion | 3.6–3.7 V | 5000 mAh | High-drain flashlight variants | Nitecore 21700 system |
| LiFePO4 21700 (LFP) | LFP | 3.2–3.3 V | 3000–4000 mAh | 10–20 A | Safety-first, long cycle life |
Looking for 21700 battery 5000mAh or a 21700 powerbank? We build custom modules with Samsung 50E/50S, LG M50 family and Panasonic NCR21700A. Need 21700 button top battery or 21700 flat top battery? Both are available. Contact us for 21700 cells supply (Samsung, Molicel, LG, Panasonic, EVE, Lishen) and complete pack builds from 11.2V to 72V.
Stable, safe, and long-lasting—best for energy storage.
LFP chemistry offers superior thermal stability and 3000+ cycles, making it the best fit for solar, RV, telecom, and marine storage.
✅ 12V / 24V / 48V options
✅ Prismatic, cylindrical, or modular form
✅ UL, CE, UN38.3 compliance ready
| Pack Name | Series (S) | Nominal Voltage | Max Voltage* | Capacity Range | Cycle Life** | Applications |
|---|---|---|---|---|---|---|
| 12.8V LiFePO4 Battery | 4S | 12.8V | 14.6V | 50–400Ah | 4,000–6,000 cycles | RV, boat, 12V 100Ah LiFePO4, UPS |
| 16V LiFePO4 Battery | 5S | 16.0V | 18.25V | 50–200Ah | 4,000+ cycles | Marine cranking, audio, specialty DC |
| 25.6V LiFePO4 Battery (24V) | 8S | 25.6V | 29.2V | 50–300Ah | 4,000–6,000 cycles | LiFePO4 24V 100Ah, solar battery, golf carts |
| 38.4V LiFePO4 Battery | 12S | 38.4V | 43.8V | 50–300Ah | 4,000–6,000 cycles | AGV, industrial carts, ESS |
| 51.2V LiFePO4 Battery (48V) | 16S | 51.2V | 58.4V | 50–500Ah | 4,000–6,000 cycles | LiFePO4 48V 100Ah, server rack, telecom |
| 76.8V LiFePO4 Battery | 24S | 76.8V | 87.6V | 50–300Ah | 4,000+ cycles | Heavy carts, off-grid ESS, EV |
| 96V LiFePO4 Battery | 30S | 96.0V | 109.5V | 100–300Ah | 4,000+ cycles | EV, boats, high-power ESS |
We supply LiFePO4 cells and packs from top brands including EVE LF280K / LF105, CATL, CALB, Power Queen, Redodo, Ampere Time, Renogy, Victron, Battle Born, and Eco Worthy. Choose LiFePO4 100Ah / 150Ah / 200Ah / 280Ah / 300Ah / 400Ah depending on your system needs.
| Capacity | Example Models | Nominal Voltage | Cycle Life | Applications |
|---|---|---|---|---|
| 12V 100Ah LiFePO4 | Power Queen 100Ah / Redodo 100Ah / Ampere Time 100Ah | 12.8V | 4,000–6,000 | RV, trolling motor, solar battery |
| 12V 200Ah LiFePO4 | Renogy 200Ah / Battle Born 200Ah / Power Queen 200Ah | 12.8V | 4,000+ | Marine battery, off-grid storage |
| 12V 300Ah LiFePO4 | EVE 304Ah / CATL 300Ah / Eco Worthy 300Ah | 12.8V | 4,000+ | Large RVs, backup power |
| 24V 100Ah LiFePO4 | Redodo 24V 100Ah / Ampere Time 24V 100Ah | 25.6V | 4,000+ | Golf cart, solar ESS |
| 24V 200Ah LiFePO4 | Eco Worthy 200Ah / Power Queen 200Ah | 25.6V | 4,000+ | Home energy storage, UPS |
| 48V 100Ah LiFePO4 | Victron 48V 100Ah / BigBattery 48V / Redodo 48V | 51.2V | 4,000+ | Server rack, telecom |
| 48V 200Ah LiFePO4 | EVE LF280K / CATL 280Ah / Pylontech | 51.2V | 4,000+ | Solar ESS, off-grid systems |
Engineered for safety, cost-efficiency, and exceptional performance in extreme environments.
Leveraging abundant sodium chemistry and thermally stable materials to ensure reliable operation in a wide temperature range from −40 °C to 100 °C.
✅ Safer chemistry – Low thermal-runaway risk and built-in flame resistance
✅ High-temp stability – >95% capacity at 50 °C; operates continuously up to 100 °C
✅ Cold-ready & fast-charging – >90% capacity at –20 °C; ~80% charge in 18 min
✅ Cost-effective & long-life – Abundant sodium, no cobalt/lithium, 1000s of cycles
🧱 Form Factor: Automotive case (Group 48/L3 class)
⚙️ Configuration: 4S (Na-ion), active BMS
🔋 Nominal Voltage: ≈12.0–12.8 V
📦 Capacity: 55–65 Ah
⚡ Peak Cranking Pulse*: 400–650 A (5 s @ 25 °C)
🔌 Charge Window: 13.8–14.6 V
♻️ Cycle Endurance**: >50k micro-cycles; 1500–3000 deep cycles
📝 Notes: Drop-in AGM/EFB replacement; low-temp acceptance improved vs LFP
🧱 Form Factor: Automotive case (Group 49/L5 class)
⚙️ Configuration: 4S or 5S (calibrated for alternator)
🔋 Nominal Voltage: ≈12.0–13.0 V
📦 Capacity: 65–75 Ah
⚡ Peak Cranking Pulse*: 500–750 A (5 s @ 25 °C)
🔌 Charge Window: 13.8–14.4/14.6 V
♻️ Cycle Endurance**: >60k micro-cycles; 2000–3500 deep cycles
📝 Notes: High-power S/S duty; LIN/CAN SoC option
🧱 Form Factor: Automotive case (Group 94R/H7 class)
⚙️ Configuration: 4S (Na-ion), dual-sense BMS
🔋 Nominal Voltage: ≈12.2–12.8 V
📦 Capacity: 75–85 Ah
⚡ Peak Cranking Pulse*: 600–800 A (5 s @ 25 °C)
🔌 Charge Window: 13.8–14.6 V
♻️ Cycle Endurance**: >80k micro-cycles; 2500–4000 deep cycles
📝 Notes: Fleet start-stop; enhanced regen charge acceptance
⚙️ Configuration: 16S Na-ion + BMS
🔋 Nominal / Max Voltage: ≈48 V / ≈58 V
📦 Capacity: 8–12 Ah
⚡ Peak Power (10 s): 7–12 kW
🔌 Charge Acceptance: High regen acceptance (stop-go urban)
📡 Interfaces: CAN/LIN; 12V gateway
⚙️ Configuration: 16S Na-ion + BMS
🔋 Nominal / Max Voltage: ≈48 V / ≈58 V
📦 Capacity: 18–22 Ah
⚡ Peak Power (10 s): 12–18 kW
🔌 Charge Acceptance: Fast charge acceptance; power boost
📡 Interfaces: CAN 2.0B; HVIL; isolation monitor
| Chemistry | Cell Nominal V | Pack Energy Density | Strengths | Best Fit | Notes |
|---|---|---|---|---|---|
| NVP/C Na3V2(PO4)3 / Hard-Carbon | ~3.2 V | ~90–140 Wh/kg | Power density, stability, moderate cost | 12V SLI, 48V MHEV modules | Common in sodium battery technology demos |
| PBA Prussian White / Prussian Blue Analogue | ~3.2–3.4 V | ~80–130 Wh/kg | Very fast charge/discharge, long life | High-power UPS, start-stop | Used by several natron batteries-style systems |
| NaFePO4 Sodium Iron Phosphate | ~3.0–3.2 V | ~90–130 Wh/kg | Safety, cost, thermal stability | 12V drop-ins, stationary ESS | sodium iron phosphate battery class |
| Layered Oxides NaxMO2 | ~3.0–3.3 V | ~110–160 Wh/kg | Higher energy, good rate | Aux EV, 48V modules | Emerging in na ion battery packs |
| NaS (High-Temp) Sodium–Sulphur | ~2.0 V | Stationary-only | Very high cycle life | Grid storage | sodium sulphur battery — not for vehicles |
Looking to buy sodium ion battery packs or compare sodium ion battery price vs lead-acid? We supply sodium ion battery for sale in 12V SLI and 48V sodium ion battery modules. We follow the latest sodium battery technology from CATL sodium ion battery, BYD sodium ion battery, Faradion battery, Altris sodium ion battery, Natron batteries, and Hina battery developments, and build practical packs for fleets and sodium batteries for cars. (Also known as na ion battery, na+ battery, natrium battery / natrium ion battery.)
Related terms covered for search intent: catl sodium, catl sodium ion, byd sodium batteries, sodium ion 18650 (cylindrical Na-ion), sodium ion cell, sodium ion solid state battery, sodium metal batteries, sodium phosphate battery, sodium chloride batteries. Contact us for sodium ion battery pack engineering, custom sizes, and value-engineered sodium battery price quotes.
Sealed for the elements, built for rugged use.
Our waterproof battery packs are IP65–IP68 rated, designed for outdoor, marine, and industrial mobility.
✅ Sealed housing + resin potting
✅ Anti-corrosion, shockproof
✅ Outdoor eBikes, fishing gear, mining equipment
Scalable, stackable power—built for flexibility.
Modular packs enable system integrators to build energy systems with parallel/series stacking, ideal for ESS, telecom, and industrial backup.
✅ 19” rack-mount compatible
✅ Parallel and serial configuration
✅ LCD, CAN/RS485 interfaces available
Engineered for extreme heat and harsh environments.
We use thermal-resistant materials and specialty cell chemistries to ensure safety and stability up to 85°C.
✅ Military-grade or industrial Li-ion cells
✅ High-temp insulation and flame-retardant casing
✅ Ideal for oil field, mining, under-hood applications
From last-mile eMobility to off-grid storage—Junda battery packs are engineered to perform in the real world. Explore how our custom lithium battery solutions are used across industries that demand reliability, safety, and long-term performance.
Answers to common questions about custom battery pack engineering, certifications, chemistries, timelines, and OEM options.
Custom lithium battery packs are tailor-made battery solutions engineered to meet specific voltage, capacity, and form factor requirements for various applications. These packs typically include custom-designed BMS, casing, and wiring tailored to the device or system.
Custom battery pack systems are widely used in:
Off-the-shelf packs have fixed specifications, while custom power packs are designed around your electrical, mechanical, and safety requirements. This ensures optimal performance, longer cycle life, and better integration into your system.
Yes. We provide custom LiPo battery packs with different cell configurations (e.g., 3S, 4S, 6S), capacities, and discharge rates. They are ideal for UAVs, RC devices, and compact electronics requiring lightweight, high-energy solutions.
Absolutely. We design and produce custom pack battery systems for industrial devices with features like high-discharge rates, smart BMS integration, IP-rated casings, and high-temperature tolerance.
Yes. We specialize in custom battery packs for medical equipment, ensuring compliance with healthcare safety standards, including IEC certifications, with options for sterilizable casing and precise power calibration.
We offer:
All chemistries are engineered based on your project’s energy density, safety, and budget needs.
Yes. Our custom built battery packs range from compact 500mAh units to high capacity custom battery packs exceeding 100Ah, used in e-bikes, robotics, and energy storage.
We offer full custom battery pack engineering, including:
Our custom battery pack assemblies meet global safety and transportation standards such as:
Lead time varies based on complexity, certification needs, and order volume.
We can customize:
Yes. As a custom battery pack manufacturer, we provide white-label and OEM services for brand owners, including packaging, logo printing, and NDA-secured development.
With more than a decade of experience, Junda delivers precision-engineered lithium battery packs tailored for your unique applications. Here’s what makes us a trusted partner for global B2B clients:
At Junda, our engineering team is led by a senior battery architect with 15+ years of hands-on experience at CATL, BYD, and other industry leaders. Backed by a cross-functional team of 6 engineers, we provide full-cycle development from design and simulation to testing and certification. We’ve completed over 1,000 custom battery pack projects across sectors like eMobility, energy storage, medical devices, and industrial tools—always focusing on safety, reliability, and performance.
Junda operates under a strict ISO 9001:2015-certified quality management system, overseen by our QA director and implemented across every department. From incoming cell inspection to final pack aging tests, every step is digitally tracked and traceable. Our system ensures stable supply chain sourcing, controlled assembly processes, and compliance with industry benchmarks such as UN38.3, CE, and IEC 62133.
Junda’s battery pack assembly process integrates mechanical, electrical, and thermal design tailored to your use case. Our capabilities include IP67/IP68 waterproof housing, high-discharge BMS systems, CAN/RS485 communication protocols, and reinforced designs for vibration or extreme environments. We conduct cell sorting, welding, insulation, balancing, and aging tests in-house to ensure consistent performance and longevity.
From your first inquiry to final delivery, we provide responsive, multilingual support backed by a dedicated sales and engineering team. We guide clients through technical evaluation, prototyping, compliance, and logistics—ensuring a transparent, stress-free experience. Whether you need an urgent sample or a long-term OEM solution, we’re here to make your battery development process efficient and reliable.
Share your voltage, size, application, and quantity needs—we’ll assess your project quickly.
Our engineers will optimize the design, confirm details, and provide samples if needed.
Once approved, we start production and arrange fast, secure shipping to your destination.
Need a custom lithium battery pack? Just send us your specs—we’ll help you choose the right voltage, case, and configuration for your application.
At JUNDA, we make customization easy. Follow these 3 simple steps to start today:
Send your battery requirements — voltage, capacity, casing type, or upload drawings/photos.
We’ll evaluate your specs and recommend the best configuration. A detailed quote will be sent within 24 hours.
After approval and deposit, we start production. Shipping and tracking will be arranged for fast, secure delivery.
