Arvee AmpSmart vs Live BMS

Understand your RV electrical system with Arvee AmpSmart — the most comprehensive free RV power calculator available. Whether you're plugged in at a campground, dry camping off-grid, or planning a battery and solar upgrade, AmpSmart helps you make informed decisions about your RV's electrical system. THREE CALCULATION FLOWS: Shore Power Check — Will running these appliances trip my breaker? - Analyze 15A, 20A, 30A, and 50A hookups - See total load vs. available capacity at a glance - Get warnings for overloads, surge/startup risks, and the 80% continuous load rule - Understand shared circuit limitations on household outlets Off-Grid Power Budget — How long can I last on battery and solar? - Model your battery bank by chemistry (Flooded Lead-Acid, AGM, LiFePO4) with accurate depth-of-discharge and efficiency factors - Add solar panels with location and season-based peak sun hour presets - Factor in generator support, inverter efficiency, and cold weather derating - See daily consumption breakdowns, endurance estimates, and solar balance System Builder — What battery, solar, and inverter setup do I need? - Set your off-grid goal (days between charges) and let AmpSmart size the system - Compare battery chemistries side by side (capacity, cost, weight, lifespan) - Get solar, inverter, and charge controller recommendations for your location - Enter your existing system to see exactly where it falls short REAL-WORLD RV APPLIANCE LIBRARY: - 37 curated presets with practical power values (A/C, microwave, fridge, CPAP, Starlink, and more) - Three usage modes per appliance: hours/day, minutes/day, or duty cycle % - Add custom appliances for anything not in the library - Surge/startup wattage tracked separately for compressor-based loads LEARN AS YOU GO: - Contextual help articles at every step explain watts, amps, battery chemistry, solar peak sun hours, inverter efficiency, and more - Built for RVers who want to understand their system, not just get a number SHAREABLE REPORTS: - Generate a branded Power Profile Report from any calculation - Share with others or download as a file FREE & PRIVATE: - Completely free — no ads, no in-app purchases, no paywalls - No account required — just open and calculate - No personal data collected — your information stays on your device - Works offline — no internet connection needed - Available on iPhone, iPad, and Mac Made with care by Arvee — the RV trip planning platform that helps RVers stay connected with friends on the road.

Live BMS puts every one of your lithium batteries on a single, beautiful dashboard — no more switching between manufacturer apps. Connect over Bluetooth to your LiFePO4 packs and watch what actually matters, live: state of charge, pack voltage, current, per-cell voltages, temperature, cycle count, and health. A liquid-fill charge ring and clear in/out power flow make each battery readable at a glance, and a running estimate tells you how long until the pack is full while charging or empty while it's under load. Built for people running more than one battery — on a boat, an RV, a van, or an off-grid solar setup. WATCH FROM ANYWHERE (OPTIONAL) Add the Live BMS Link, a small Wi-Fi bridge that sits with your batteries, and your dashboard keeps updating when you're nowhere near the boat. Without it, Live BMS works exactly as it always has — Bluetooth only, nothing leaves your phone. FEATURES • One dashboard for all your batteries, updating in real time • Auto-detects supported BMS units — no fiddling with settings • Live "time to full" and "time to empty" at the current rate • Battery banks: group the packs wired together and see one combined charge, power draw, and runtime • Trip tracking: compare where you started to now, burn rate, and days remaining at your current use • Per-cell voltage bars and imbalance so you can spot a weak cell • History charts for charge, voltage, and current • Remote output on/off, including a master switch for all batteries • Alerts for low charge, high temperature, and cell imbalance — with plain-language guidance on what to set • Optional Live BMS Link accessory for checking your batteries from anywhere • Fahrenheit or Celsius, and Light / Dark / System themes FREE VS PRO The free version shows live charge and voltage for one battery — so you can prove it works with your hardware before paying anything. A single $4.99 unlock adds everything else: full telemetry, trips, history, alerts, power control, banks, and unlimited batteries. SUPPORTED BATTERIES Works with LiTime, Power Queen, and Redodo LiFePO4 batteries, plus common JBD / Xiaoxiang, JK-BMS, and Daly BMS units. More families are being added. PRIVACY Live BMS has no accounts, no ads, and no analytics. It talks directly to your batteries over Bluetooth and stores your history on your phone. If you add the optional Live BMS Link, your own battery readings pass through our server so you can see them remotely — nothing else does, and none of it is tied to your name, your email, or anything that identifies you. Note: Live BMS is an independent app and is not affiliated with or endorsed by LiTime, Power Queen, Redodo, or any BMS manufacturer.