Estimated Run Times (Medium Power)*

Garment – Approx. Run Time

J601 ULTRAFLEX Jacket — 1 hr 15 min

J505 EXTREME Jacket — 1 hr

J501 Jacket — 1 hr 15 min

B501W Bodywarmer — 6 hrs

B601 ULTRAFLEX Bodywarmer — 2 hrs

V501 Vest — 5 hrs

Motorcycle Gloves — 2 hrs

*Run times are approximate and depend on ambient temperature, garment type, and power level.

Do not use one battery to power multiple garments simultaneously; doing so may trip the battery’s 6 A safety limit.

⚠️ Safety Notice

Never leave any lithium-ion battery unattended while charging or charge overnight.

Always charge on a non-flammable surface, away from direct sunlight, moisture, or heat sources.

Disconnect once fully charged to prevent overheating or potential fire risk.

In the Box

• KEIS 5,000 mAh 12 V Battery Pack

• USB-C Charging Cable

• User Guide

Power Compatibility

Compatible with all KEIS 12 V heated jackets, bodywarmers, and vests.

For longer run times, see the KEIS 10,000 mAh Battery Pack or use the supplied 12 V bike lead for continuous power.

Built to work seamlessly across the KEIS system.

The 5,000 mAh pack delivers reliable power whilst you ride — ideal for shorter journeys or commuting without the hassle of wiring to your bike battery. The LCD display and fast USB-C charging make it genuinely practical — no guesswork, no downtime.

It’s the simplest way to stay warm and in control when you’re riding lead-free.