BatteryScope
Live stats from your Bluetooth lithium batteries — right on your phone.
Connect to JBD / Xiaoxiang-protocol BMS modules used by Impulse, Renogy, LiTime, Eco-Worthy, and other consumer LiFePO4 brands. Watch voltage, current, state of charge, temperature, and cell balance in real time. Group batteries in series or parallel for aggregate stats.
What you see
A glance tells you the state of every battery on your boat, RV, off-grid setup, or shop. Dig deeper for per-cell voltages, temperature sensors, cycle count, and time-to-empty.
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Dashboard at a glance
Every saved battery and group on one screen, with state of charge, voltage, and a quick charging/discharging indicator. Tap any row for full live stats.
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Group batteries in series or parallel
Wire two 12V batteries in parallel and BatteryScope reports the combined capacity and current. Series for higher voltage banks. Aggregate stats roll up automatically.
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Per-battery live stats
Voltage, current, power, cycle count, temperature, capacity remaining, and a time-to-empty (or time-to-full when charging) computed from the current draw.
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Tune the polling rate
Pick how often BatteryScope reads from the BMS. Tighter intervals mean fresher numbers; longer intervals save phone battery and BLE bandwidth. Toggle cell-voltage polling for another big drop in traffic.
Built for the job
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Works with what you have
JBD / Xiaoxiang BLE protocol (service
FF00) — used by Impulse, Renogy, LiTime, Eco-Worthy, and most consumer LiFePO4 batteries. -
Per-cell visibility
See min / max / average cell voltage and balance delta, so you can catch a weak cell before it costs you a battery.
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Multi-temperature sensors
BMS modules with two or more thermistors all report side by side. Watch for hot spots under heavy load.
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Time-to-empty & time-to-full
Estimates computed from real current draw and remaining capacity. Updates as your load changes.
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100% local
No accounts, no cloud, no analytics. The app makes zero network requests — all data stays between your phone and your batteries.
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Built-in debug tools
Turn on the optional Debug tab to inspect raw BLE frames. Helpful when troubleshooting a BMS that isn't responding.
Get notified at launch
BatteryScope is heading into TestFlight. Email ben.wyrosdick@gmail.com to join the beta — please mention the battery brand and model you'd like to monitor.