Just received Pila charger and to my surprise, this charger was designed to work for someone with color-vision impairment.
I had several different chargers over the years and they all used some type of LED that would change color (usually green/red) to indicate charging status. This was not very useful for someone with red/green vision impairment or completely color-blind. While the Pila charger also uses red/green colors, these are in two separate LEDs, so the user doesn't need to rely on color alone, but can instead "read" the placement of the LED -- the LEDs are even labeled as "Charging" and "Full".
Great design.
I had several different chargers over the years and they all used some type of LED that would change color (usually green/red) to indicate charging status. This was not very useful for someone with red/green vision impairment or completely color-blind. While the Pila charger also uses red/green colors, these are in two separate LEDs, so the user doesn't need to rely on color alone, but can instead "read" the placement of the LED -- the LEDs are even labeled as "Charging" and "Full".
Great design.