Suntour battery not charging - iZip Simi

Solar Roller

New Member
Got a new Simi in the shop, ran the battery flat on a test ride, but am unable to charge it. The battery has 3 lights with the 4th/top light flashing when I press the button on the pack. Plugging into the charger, I can hear a relay in the charger cycling about every second, but the light stays green. The bike won't power on. The charger can charge a second battery just fine.

Is there a way to reset the pack or is it warranty time? This is a water-bottle style pack made by Suntour.