The Tekk NT90 is a basic walkie-talkie style radio. With a good battery they will operate a full business day on a charge. The radios should be charged overnight (or 8-12 hours) after the battery is depleted or nearly depleted. If using these in a business situation you can usually go a full 8-hr day on a charge. Battery packs have approx a 2 year life expectancy before needing replaced.
If you need more info, contact Tekk Inc at 800-521-8355.
Best regards.
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