Battery Helper

Your last meter photo

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Add a photo of the meter to start.

Take a photo of the meter and I will work out the rest.

Today and tonight

The line is your battery. The shaded band is the range — top if it's sunny and you use little, bottom if it's cloudy and you use a lot. The red line is your run-the-generator line: keep the battery above it.

If you run the generator

📷 Take a photo of the meter

Good to know

Tip: put this page on your Home Screen so it is one tap away — tap the Share button, then "Add to Home Screen".

Settings

Tell me to run the generator before the battery gets to (%) When I run the generator, charge to (%)

Check the numbers

Make sure these match the meter screen. Fix any that are wrong, then tap Save.

Tip: on an iPhone, you can press and hold the photo to copy its numbers, then paste them into the boxes.

Fast way: paste the numbers from the photo

In your Photos app, open the meter photo, press and hold on the numbers, tap Copy — then paste here and tap the button.

When was this photo taken? Battery percent (top left) Battery left (Ah, under the percent) Volts Amps (number only)

Watts

The generator is running

The meter was unplugged since the last full charge

Past readings