Dashcam Batteries
Built for the high-temperature environment of in-vehicle dashcams: rated to 85℃ with high-cobalt cells delivering full capacity and stable endurance.
Flexible — specifications and solutions tailored to your requirements
Products
A product matrix built on one core capability
Proven standard products plus fully customised development to your specification — small batches accepted.
Portfolio
Seven product directions, one core capability
Lithium battery R&D and manufacturing at the core, extending into dashcams, security, smart homes, AI toys, action imaging and robotics.
Security Camera Batteries
Operate reliably down to -40℃ with high output efficiency; terminal in/out technology delivers >90% port efficiency.
Safe & reliable — multiple IC options, optional fuel-gauge display
Doorbell & Lock Batteries
Covering R185, K100, R217 and R189 — all with proprietary tooling, domestic and international design patents, and every model in volume production.
R185Doorbell & lock
K100Doorbell & lock
R217Doorbell & lock
R189Doorbell & lock
Low-Power Batteries
18650 from 2S to 20S in series-parallel configurations, covering low-power security cameras, doorbells and locks with long standby.
18650-2S2 cells
18650-3S3 cells
18650-4S4 cells
18650-8S8 cells
18650-12S12 cells
18650-16S16 cells
18650-20S20 cells
AI Toy Batteries
High-safety, high-rate lithium batteries for AI toys and smart interactive devices, balancing size and endurance.
Strategic focus — AI robotics is a declared future direction
Action Camera Batteries
For action cameras, gimbals and other high-discharge-current devices, balancing rate performance and cycle life.
High rate — meets the instantaneous power demands of action imaging
Robotics Batteries
Power and endurance solutions for service and AI robots, with series-parallel configurations and custom BMS.
Strategic direction — a declared focus for AI robotics ahead
Custom Development
Custom products for special hardware requirements, small batches accepted, with an engineering team for in-depth collaboration.
Fast delivery — stock on standard models avoids long production cycles
Why Rongshitongda
Four reasons customers choose us
Short Lead Times
Stock on standard models avoids long production cycles and delivery delays.
Quality Supply Chain
Deep cooperation with BAK, Sunwoda and other premium 18650 suppliers.
Rapid After-sales
Fast response to customer needs with timely communication and closed-loop resolution.
Engineering Support
A product engineering team able to engage deeply and co-develop with you.
Cell Supply Chain
Long-term partnership with leading cell brands
| Partner | Representative Model | Type | Application |
|---|---|---|---|
| Sunwoda | XWD-1860P2600 | 18650 cylindrical | Dashcam · Security · Locks |
| BAK | BK-18650P3350 | 18650 cylindrical | Low-power · Robotics |
| LG | LG-21700P500 | 21700 cylindrical | High-current · Action imaging |
| EVE | EVE-18650-2500 | 18650 cylindrical | Security · Smart home |
| Tianpeng | TP-18650-2600 | 18650 cylindrical | General custom |
| Lishen | LS-18650-3250 | 18650 cylindrical | High-capacity standby |
Third-party IC options are also available, with optional fuel-gauge display and full in-house X-RAY, safety and reliability test equipment.