While turned off the product seems very good, the led lighting is terrible. Although the pictures in the ad show nice unicolor lighting, the reality is as in picture. Clearly visible LEDs. Also the charge reading is Voltage-linear: 1 - 3.40V; 2 - 3.60V; 3 - 3.80V; 4 - 4.00V. The reading DOES NOT SHOW CHARGE, but the voltage of the battery! Capacity readings in this case: 1 stripe > 5% 2 stripes > 10% 3 stripes > 70% 4 stripes > 90%
Works great. Very accurate. At exactly 50% of the remaining capacity of the 5 kw 7S battery pack, the charge indicator switched from 3 leds on to 2 on. Impressed.