Mower (56v/7.5ah) shuts off after 10 minutes on full charge.

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21" Self-propelled mower (56v/7.5ah) shuts off after 5-10 minutes on full charge. (Blinking yellow light.) Starts back up after sitting for 5 minutes, runs for 5 minutes... repeats for 45 minutes until yard is done. Battery is still not completely discharged when finished. Did not happen last year. (Purchased July 2017.)
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Posted 2 years ago

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Official Response
Sam, how tall is the grass you are attempting to cut? Also, how much height are you trying to remove at a time? It sounds like you may be overworking the mower a bit and it is overheating (the orange light on the mower) and then needs the 5 minutes to cool down a bit so you can start mowing again.
Tips for mowing.
Mow when the grass is dry.
Sharp blade.
Try only removing an inch or less of the length of the grass at a time so as not to stress the mower too much. 
Double check the underside of the mower isn't too clogged with grass clippings. Clean it if so.

If none of these, you might need to give customer service a call.