Custom Lithium Battery Solutions for Rechargeable LED Keychains

Application Background of Rechargeable LED Keychains

Rechargeable LED keychains are widely used in personal safety lighting, promotional electronics,
outdoor accessories, and emergency illumination. Their compact size and portability make them
ideal everyday carry (EDC) products.

Due to extremely limited internal space, LED keychains require ultra-compact lithium batteries
that balance energy density, safety, and stable current output. Frequent charging cycles and
non-technical end users further increase the importance of protection against overcharge,
short-circuit, and thermal risks.

PKNERGY-Based Battery Solution for LED Keychains

For rechargeable LED keychains, PKNERGY primarily recommends ultra-thin
custom lithium polymer battery
and compact Li-ion battery solutions.

• Typical voltage: 3.7V rechargeable battery packs
• Capacity range: 40mAh – 300mAh (customized by runtime requirements)
• Integrated PCM/BMS for overcharge, over-discharge, and short-circuit protection
• Support for USB-C or Micro-USB charging modules
• Custom wire length, JST/Molex connectors, optional plastic housing

All battery solutions comply with UN38.3, MSDS, CE, and IEC62133 (where applicable),
ensuring safe global transportation and retail readiness.

Value for Buyers, Product Managers, and Engineers

For Buyers: Competitive pricing, flexible MOQ, and fast sampling within 7–10 days help
shorten product launch cycles.

For Product Managers: OEM battery customization reduces industrial design constraints
while enabling slimmer and more attractive LED keychain designs.

For Engineers: Stable lithium power systems deliver consistent brightness, over
500 charge cycles, and predictable aging performance with full certification documentation.

Case Study: Promotional Rechargeable LED Keychain

Why Choose PKNERGY

With over 26 years of manufacturing experience, PKNERGY specializes in custom battery solutions
for compact consumer electronics. We use A-grade cells, support rapid prototyping, and deliver
more than 20 million cells and 500,000 battery packs annually.

Our batteries are trusted worldwide in LED lighting, IoT devices, portable electronics, and
other space-constrained applications.

FAQ