Voltly: Charger Speed Test

You own more chargers than you think — the one that came in the box, an old brick in a drawer, a fast one you bought for a different phone, maybe a power bank or car charger. Voltly tells you which one is actually best for the phone in your hand.

Plug in, charge for a few minutes, and Voltly measures real wattage, not the number printed on the box. Do that with every charger you have, and Voltly ranks them — so you always know which one to reach for.

For chargers that fall short, Voltly explains exactly why: underpowered for your phone, missing USB-C PPS, a cable that can't carry the wattage, or a proprietary fast-charging protocol your phone needs. Then it points you at gear that actually fits, not a generic "buy a fast charger" shrug.

Voltly is not a battery-health dashboard. It answers one question, charger by charger: is this the best one I own?

KEY FEATURES

• My Chargers ranking — tag every charger you own after a session, and Voltly ranks them by real measured watts. See your best charger at a glance, and share the ranking as a card.
• Live charging wattage monitor — real V × A, not the sticker rating.
• Recommendation with receipts — a specific reason your charging is (or isn't) optimal, tied to your phone's actual rated speed.
• Charging-type detection — USB, PD, PPS, proprietary fast charging, wireless.
• Time-to-full estimate once a reading stabilizes.
• Charging session history with per-charger attribution.
• Buying guide with affiliate-safe links — free for everyone, no paywall.
• AMOLED black theme and a home screen widget (Premium).

PREMIUM

Voltly Premium is a one-time lifetime unlock: unlimited history, the AMOLED theme, and the home screen widget. A 7-day in-app trial is available before purchase. My Chargers ranking, the buying guide, and every core diagnostic are free for everyone — Premium is display and history polish, not the core feature.

GOOD TO KNOW

Voltly may earn a commission from charger and cable recommendations. Recommendations are based on measured charging behavior, phone specifications, and charger compatibility — never on commission rate.

Voltly reads battery telemetry exposed by Android. Some devices expose limited sensor data, so confidence labels may vary by device.