Battery specs, charging standards, and power calculators in one app.
DEVICE DATABASE
150+ devices with full battery specifications: capacity (mAh/Wh), maximum charging wattage, port types, supported charging standards, wireless charging speed, estimated full charge time, battery chemistry, cycle rating, and device-specific charging tips. Coverage includes iPhones, Samsung Galaxy, Google Pixel, iPads, MacBooks, Android flagships, power banks, and wearables.
CHARGING STANDARDS
15 protocols documented: USB Power Delivery, Quick Charge 2.0–5.0, MagSafe, Qi, Qi2, Samsung Super Fast Charging, SUPERVOOC, HyperCharge, VOOC, and GaN technology. Each entry lists maximum wattage, voltage range, connector type, versions, and compatible devices.
CHARGE TIME CALCULATOR
Inputs: device or manual capacity, current percentage, target percentage, charger wattage. Output: estimated charge time in minutes. Includes efficiency adjustment for wired vs wireless charging and CC/CV slowdown above 80%. Side-by-side comparison across multiple wattages.
POWER BANK CALCULATOR
Inputs: power bank capacity, device capacity, connection type (USB-C 90%, USB-A 85%, wireless 70% efficiency). Output: number of full charges and estimated trip duration at a configurable charges-per-day rate.
ELECTRICITY COST CALCULATOR
Inputs: device capacity, charges per day, charger wattage, electricity rate per kWh. Output: daily, monthly, and yearly charging cost. Includes a reference comparison table across device categories from smartphones to electric vehicles.
POWER CONVERTER
Watts, volts, and amps triangle calculator — enter any two values to compute the third. Includes mAh-to-Wh converter with adjustable voltage. Preset references for common USB and outlet configurations.
CHARGE JOURNAL
Log individual charges with device, start/end percentage, charger type, wattage, duration, temperature, and notes. Displays weekly chart, daily average, and consecutive-day streak.
BATTERY HEALTH TRACKER
Record battery health percentage over time. Line chart shows monthly trend. Calculates degradation rate and predicts the date when health will reach 80%. Cycle count reference with visual progress indicator.
All data stored on-device. No account required. Works offline.
DEVICE DATABASE
150+ devices with full battery specifications: capacity (mAh/Wh), maximum charging wattage, port types, supported charging standards, wireless charging speed, estimated full charge time, battery chemistry, cycle rating, and device-specific charging tips. Coverage includes iPhones, Samsung Galaxy, Google Pixel, iPads, MacBooks, Android flagships, power banks, and wearables.
CHARGING STANDARDS
15 protocols documented: USB Power Delivery, Quick Charge 2.0–5.0, MagSafe, Qi, Qi2, Samsung Super Fast Charging, SUPERVOOC, HyperCharge, VOOC, and GaN technology. Each entry lists maximum wattage, voltage range, connector type, versions, and compatible devices.
CHARGE TIME CALCULATOR
Inputs: device or manual capacity, current percentage, target percentage, charger wattage. Output: estimated charge time in minutes. Includes efficiency adjustment for wired vs wireless charging and CC/CV slowdown above 80%. Side-by-side comparison across multiple wattages.
POWER BANK CALCULATOR
Inputs: power bank capacity, device capacity, connection type (USB-C 90%, USB-A 85%, wireless 70% efficiency). Output: number of full charges and estimated trip duration at a configurable charges-per-day rate.
ELECTRICITY COST CALCULATOR
Inputs: device capacity, charges per day, charger wattage, electricity rate per kWh. Output: daily, monthly, and yearly charging cost. Includes a reference comparison table across device categories from smartphones to electric vehicles.
POWER CONVERTER
Watts, volts, and amps triangle calculator — enter any two values to compute the third. Includes mAh-to-Wh converter with adjustable voltage. Preset references for common USB and outlet configurations.
CHARGE JOURNAL
Log individual charges with device, start/end percentage, charger type, wattage, duration, temperature, and notes. Displays weekly chart, daily average, and consecutive-day streak.
BATTERY HEALTH TRACKER
Record battery health percentage over time. Line chart shows monthly trend. Calculates degradation rate and predicts the date when health will reach 80%. Cycle count reference with visual progress indicator.
All data stored on-device. No account required. Works offline.
Show More
