Engineered with 3.6V 800mAh NiMH series technology, Himaxbatt delivers non-hazardous, bite-safe power for pet night-safety collars in extreme cold down to -20°C.
🛡️ Engineering Safety & Extreme Cold Resilience for Smart Pet Accessories
When designing illuminated pet collars and night-warning LED harnesses for North American and European winter markets, engineers face two uncompromising hurdles: severe voltage drop in freezing weather and strict air shipping regulations on lithium-based products. Drawing from over a decade of custom battery manufacturing, Himaxbatt solves this with our 3.6V 800mAh 3S1P AAA NiMH battery pack. Powered by high-purity industrial Nickel-Metal Hydride chemistry, this pack inherently eliminates thermal runaway or combustion risks—even if the collar is accidentally punctured or chewed by an active pet. Operating reliably across an ambient range of -20°C to +65°C, the electrochemical lattice maintains flat discharge plateaus, ensuring pet safety LEDs remain bright throughout extended winter night walks without premature shutdown.
⚙️ Optimized Tubular Form Factor & International Compliance Integrity
Structurally tailormade for tubular collar encapsulation, the 3-cell side-by-side triangular geometry measures just 22mm in diameter and 45mm in length, weighing a lightweight 36.0 grams. To protect sensitive cell joints against rain, snow, and pet sweat, the lead wire outlet is injection-sealed with high-grade silicone underneath a flame-retardant PVC heat-shrink sleeve, terminating in a standard 2-pin JST 2.0mm connector. For safety protection, an integrated internal PTC resettable fuse safeguards against external short-circuits. Standardized under IEC 61951-2 and compliant with RoHS, REACH, and MSDS requirements, this NiMH pack bypasses UN38.3 lithium testing fees and Class 9 dangerous goods freight surcharges—streamlining international customs clearance and drastically lowering total cost of ownership for OEM brand owners.
Specifications
3.6V 800mAh 3S1P AAA NiMH Battery Pack
Product Model
HMX-NiMH-3AAA-800
Battery Chemistry
Nickel-Metal Hydride (NiMH)
Cell Configuration
3S1P (3 AAA Cells in Series)
Nominal Voltage
3.6 V
Rated Capacity
800 mAh
Nominal Energy
2.88 Wh
Max Continuous Discharge
1600 mA (2.0C)
Physical Dimensions
Diameter 22mm x Length 45mm
Total Pack Weight
Approx. 36.0 g
Packaging & Sealing
PVC Heat-Shrink Sleeve + Silicone Injection
Output Cable & Connector
UL1007 AWG24 silicone wire, JST 2.0mm 2P
Internal Protection
Built-in PTC Resettable Fuse
Discharge Cut-off Voltage
3.0 V
Operating Temp
-20°C to +65°C
Operating Temp
0°C to +45°C
Compliance & Certifications
IEC 61951-2, RoHS, REACH, MSDS compliant
Frequently Asked Questions
Buying Manager’s Technical Guide: Below are expert responses to common engineering and logistics questions raised by international pet hardware buyers when selecting power sources for cold-weather illuminated collars.
Why choose a 3.6V NiMH battery pack over Lithium-polymer for cold-weather pet light collars?
Standard Lithium-polymer batteries experience drastic internal resistance spikes below 0°C, leading to voltage collapse and sudden shutoffs. In contrast, Himaxbatt’s industrial NiMH chemistry retains steady discharge output down to -20°C. Furthermore, NiMH contains zero flammable organic liquid electrolytes, eliminating fire or toxic thermal runaway hazards if a pet bites through the collar enclosure.
Are there air cargo restrictions or expensive UN38.3 test fees for shipping this NiMH battery pack?
No. Under IATA Dangerous Goods Regulations (Special Provision A123), standard cylindrical NiMH battery packs are classified as Non-Dangerous Goods dry batteries for air and ocean freight. They do not require UN38.3 dangerous goods certification or expensive Class 9 shipping hazardous handling surcharges, saving substantial logistics overhead.
How does the internal hardware protection function without a digital BMS?
This 3S1P pack utilizes a built-in PTC (Positive Temperature Coefficient) resettable fuse. If an external short circuit or current spike occurs, the PTC rapidly increases its resistance to limit current to safe levels. Once the fault condition is removed, the PTC automatically resets. This pure hardware protection offers bulletproof reliability in simple pet LED lighting circuits without software failure risks.
What are the recommended charging specifications and procedures for this 3.6V 800mAh NiMH pack?
For standard trickle charging, we recommend 80mA (0.1C) for 15 hours, which requires minimal charger circuitry. For rapid charging, a current of 400mA (0.5C) for approximately 2.1 hours can be used, provided the charger incorporates negative delta voltage (-ΔV = 5–10mV/cell) termination or thermal cutoff to prevent overcharging.
Can HiMAXBATT customize the physical layout, cable length, and connector type for our collar mold?
Absolutely. While our standard configuration features a triangular 22mm×45mm geometry with a 2-pin JST 2.0mm connector, HiMAXBATT provides custom lead wire lengths (AWG24/26 silicone wire), custom connectors (Molex, Hirose, bare leads), and inline or flat 3xAAA cell arrangements tailored directly to your pet product enclosure.
