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It takes a 80 volt lithium (4.0 AH) battery and it will stayed charged 45 minutes to a hour.
Sorry, there was a problem. Please try again later.Hi Frank. Thank you for your question. Yes, the 80V 21in will work with a 2.0Ah battery. The estimated run time would depend on the load and the tool. This unit has innovative Smart Cut technology which adjusts the power or runtime based on the thickness of your grass. The 80V 2.0AH battery will give you a run-time up to 20 minutes with regular use. Keep in mind when engaging in the self-propel function it requires more power, thus taking more from your battery when using, effecting runtime. We hoped this helped!
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