Your Challenges, Our Focus

We’re here to help and look forward to your message.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Frequently asked questions.

Everything you need to know about the rechargeable 4R25 AVIakku.

What are the key benefits — why switch to AVIakku?
Do 6V construction warning lights work with the 3.6V Li-ion AVIakku?
How much does AVIakku cost?
When does AVIakku become cheaper than disposable batteries?

4R25 rethought — recharge instead of throw away

AVIALP builds rechargeable 4R25 batteries that eliminate the hidden costs and safety risks of disposable batteries used in construction warning lights. With 2–3× longer runtime, 1,000+ charge cycles, and very low self-discharge, AVIALP delivers longer operating time, less waste, and lower total cost over time.

Request a test kit

Construction warning light with an installed AVIAkku 4R25 Li-ion battery