Custom Power Battery Solutions for OEM & ODM
THOR Power delivers OEM/ODM battery solutions — from battery type, connector, PCM/BMS, and pack structure to sampling — covering LiPo, Li-ion, 18650 / 21700, backup power, and custom special battery packs.
Key Details We Help Confirm
- ✓Battery Type & Pack Direction LiPo, Li-ion, 18650 / 21700, LFP options or special pack structure based on your project needs.
- ✓Connector & Wire Layout Connector model, wire length, outlet direction, polarity, wire sequence and device-side connection.
- ✓PCM/BMS & Load Protection Current limit, peak load, NTC, temperature protection, charging and discharging logic.
- ✓Pack Structure & Production Consistency Battery thickness, PCM position, insulation, housing space, labels, packing and inspection standards.
End-to-End Custom Battery Pack Solutions
THOR Power designs and manufactures custom battery packs for OEM and ODM projects — across compact electronics, portable equipment, industrial systems, backup power and energy storage systems. Our range covers custom LiPo pouch batteries, Li-ion packs, 18650 / 21700 packs, LiFePO4 backup batteries and special configurations.
Every pack is engineered around your real requirements — voltage, capacity, discharge current, connector, PCM/BMS and installation space — never a fixed catalog spec.
Battery Chemistry & Format
LiPo pouch, Li-ion, 18650 / 21700 and LiFePO4, matched to your load and environment.
Electrical & Protection
Voltage, capacity, peak current, charging method, PCM/BMS and NTC logic.
Mechanical Integration
Dimensions, connector position, wire routing, housing and fixing method.
Sampling to Production
Engineering review, prototype verification and consistent long-term supply.
Why Custom Battery Samples Often Need Revision
Sample revisions can happen in LiPo batteries, Li-ion packs, 18650 / 21700 packs, backup power batteries and special battery projects. In many cases, the issue is not only voltage or capacity, but battery direction, connector matching, load current, PCM/BMS logic, charging method, pack structure and production detail control.
Battery Type Chosen Without Full Review
Some projects start with the wrong battery direction. LiPo, Li-ion, 18650 / 21700, LFP or a special pack structure should be reviewed based on space, load, safety, runtime and production requirements.
Electrical Fit, but Poor Assembly Fit
The battery may meet voltage and capacity requirements, but thickness, PCM position, cell layout, wire outlet direction or housing clearance can still prevent smooth installation.
Similar Connector, Wrong Match
Connectors that look similar may have different pitch, lock direction, terminal layout, wire sequence or polarity, causing the sample to fail device-side connection.
PCM/BMS Not Matched to Real Load
For high-discharge packs, power tool batteries, backup power packs and energy storage projects, peak current, continuous load, charging current and protection logic should be reviewed before sampling.
Charging and Discharging Logic Confirmed Too Late
Charging interface, charging current, discharge current, NTC, charger compatibility and BMS logic should be confirmed early, especially for Li-ion packs, 18650 / 21700 packs and LFP backup power batteries.
Sample Approved, Details Not Locked
If connector, wire length, polarity, label, packing, inspection standard and shipment documents are not recorded clearly, batch production may differ from the approved sample.
Engineering Details We Confirm Before Sampling
Before a custom sample is built, THOR Power reviews the details that affect battery selection, electrical performance, assembly fit, protection logic and repeatable production across LiPo, Li-ion, 18650 / 21700, backup power and special battery pack projects.
Battery Type & Chemistry
We review whether LiPo pouch cells, Li-ion packs, 18650 / 21700 cells, LiFePO4 options or a special pack structure better fits the project.
LiPo · Li-ion · LiFePO4Voltage, Capacity & Load Current
Voltage platform, capacity target, runtime, working current, peak current and charging/discharging requirements are checked before sample design.
Runtime · Peak LoadConnector, Wire & Polarity
We match connector, wire layout and polarity to your product — with full detail covered on our dedicated customization page.
Connector & wire detail →PCM/BMS & Charging Logic
We confirm the protection and charging logic your pack needs — explained in depth on our connector & PCM/BMS customization page.
PCM/BMS detail →Pack Structure & Assembly Fit
Battery thickness, cell layout, PCM position, insulation, housing space, casing, bracket, label position and installation direction are checked.
Structure · Housing FitProduction Detail Locking
After sample confirmation, key details such as BOM, connector, wire layout, label, packing method, inspection standard and shipment documents are locked.
Sample to ProductionDifferent Battery Formats Need Different Review Points
Custom battery projects should not be reviewed with one standard checklist. THOR Power confirms the engineering details that affect fit, safety, load performance, charging behavior and production repeatability according to each battery format.
LiPo Pouch Batteries
Thickness, battery space, wire outlet direction, connector model, polarity, PCM position, label size and assembly clearance.
The cell may meet capacity needs, but small thickness or wire direction changes can affect final device assembly.
18650 / 21700 Battery Packs
Peak current, continuous load, cell selection, welding structure, BMS current limit, thermal space and connector durability.
For power tool and high-load packs, underestimated peak current may trigger early protection or reduce reliability.
LiFePO4 Backup & Energy Storage Battery Packs
LiFePO4 cell direction, BMS protection, charging and discharging logic, capacity target, connector interface, housing and supply requirements.
Backup and storage packs need stable protection logic and repeatable production details, not only a larger capacity specification.
Special Structure Battery Packs
Special voltage, unusual structure, limited space, custom enclosure, label requirements, sample test plan and batch production feasibility.
Special projects often fail when sampling starts before structure, protection logic and production details are clearly locked.
From Sample Confirmation to Repeatable Production
A custom battery sample is only valuable when its key details can be repeated in production. After sample approval, THOR Power helps lock the specification, materials, protection design, assembly details and inspection standard before batch production.
Electrical Specification Locked
Voltage, capacity, load current, charging current, runtime target and protection requirements are confirmed before production.
Connector & Wire Layout Locked
Connector model, wire length, wire gauge, polarity, wire sequence and outlet direction are recorded clearly.
PCM/BMS Standard Locked
Protection board model, current limit, NTC, temperature protection, balancing and charging logic are confirmed.
Structure & Packing Locked
Cell layout, insulation, housing fit, label position, packaging method and shipment preparation are reviewed.
Inspection Standard Locked
Voltage, capacity, internal resistance, protection function, polarity, appearance and packing checks are defined.
Custom Battery Engineering Review FAQ
Answers to common questions about battery type selection, connector and wire confirmation, PCM/BMS protection, sample development and production consistency.
How do I know which battery type is suitable for my custom project?
The right battery type depends on device space, voltage platform, working current, peak load, runtime target, charging method, safety requirements and production plan. THOR Power can help review whether your project is more suitable for LiPo pouch batteries, Li-ion packs, 18650 / 21700 packs, LiFePO4 backup power packs or a special battery pack structure.
Can you help if I only have a device idea, drawing or old battery sample?
Yes. A device drawing, battery compartment size, old battery photo, connector photo, voltage, capacity, load current and runtime target can help us review the first battery direction and identify details that need confirmation before sampling.
What information should I provide before requesting a custom battery sample?
Please provide your application, battery space, voltage, capacity, expected runtime, working current, peak current, connector type or photo, wire length, polarity, charging method, PCM/BMS requirements, quantity plan and any drawings if available.
Can you customize both battery cells and battery packs?
Yes. We can support custom LiPo pouch cells as well as assembled battery packs with connectors, wires, PCM/BMS, insulation, labels and packing. For Li-ion, 18650 / 21700 and LiFePO4 projects, we mainly review the pack structure, protection design and production requirements.
What if my project needs a special connector, wire length, polarity or housing?
These details should be confirmed before sampling. Connector model, wire gauge, wire length, outlet direction, polarity, wire sequence, NTC, housing space and PCM/BMS position can all affect whether the battery can be installed and used correctly.
How do you choose PCM or BMS for a custom lithium battery pack?
PCM or BMS selection depends on voltage, cell configuration, working current, peak current, charging current, temperature protection, balancing needs and safety logic. Small packs may use PCM protection, while larger Li-ion, 18650 / 21700 or LiFePO4 packs may require a more complete BMS.
Can you support high-current or motor-driven battery projects?
Yes. For power tool packs, motor-driven devices and high-load 18650 / 21700 battery packs, we review continuous current, peak current, cell selection, welding structure, BMS current limit, connector durability and thermal space before sample development.
Can you support backup power and small energy storage battery packs?
Yes. For LiFePO4 backup and small energy storage battery packs, we can review capacity target, voltage platform, BMS protection, charging and discharging logic, connector interface, housing structure and long-term supply requirements.
How do you control consistency from sample to batch production?
After sample confirmation, key details should be locked, including specification, connector, wire length, polarity, PCM/BMS model, label, packing method, inspection standard and shipment documents. This helps reduce batch variation and communication errors.
Can you support UN38.3, MSDS and shipping documents?
Yes. We can support UN38.3, MSDS and related shipping documents according to the battery model, pack structure and transportation requirements. Please confirm documentation needs before mass production and shipment planning.
Need to Confirm Battery Details Before Sampling?
Send us your battery space, voltage, capacity, load current, connector photo, wire length, polarity and PCM/BMS requirements. THOR Power can help review the right battery direction before sample development.