Replacement TD Tech EP631 Two-Way Radio Battery

Overview

Radio Communication Battery suitable for TD Tech EP631

The TD-Tech BTY3500Li20 is a Li-ion battery rated at 3.8V and 3540mAh, designed as a direct-fit replacement for the TD Tech EP631 and compatible portable two-way radios. It delivers consistent, reliable runtime across demanding shift environments including construction, manufacturing, hospitality, education, and public safety.

Frequently Asked Questions

What radios is the BTY3500Li20 compatible with?

The BTY3500Li20 is compatible with the TD Tech EP631 portable two-way radios. Always verify your specific radio model number before ordering to confirm fitment.

Is a charger included?

No. The BTY3500Li20 ships as a battery only. A compatible TD-Tech charger is sold separately.

How long does the battery last on a single charge?

Estimated runtime is 10 to 14 hours per charge cycle depending on transmit duty cycle, squelch settings, and whether the radio is operating in analog or digital mode. Actual runtime will vary by usage pattern.

Does this battery require any programming after installation?

No. The BTY3500Li20 is a direct physical replacement — remove the depleted battery, insert the BTY3500Li20, and charge before first use.

Specifications

Compatible With:

BTY3500Li20

Suitable For:

for TD Tech EP631
for TD Tech EP631S
for TD Tech EP682