BatteryWiz - Battery Optimiser

BatteryWiz

In-app purchases

About this app

BatteryWiz automatically optimises your home battery storage to save money on electricity.

How it works:
BatteryWiz runs a real mathematical optimisation entirely on your phone to compute the best charge and discharge schedule for your home battery. As a home energy management system (HEMS), it combines your electricity tariff rates, solar PV generation forecasts, and a self-learning model of your household's energy consumption to figure out exactly when to charge from the grid, when to store solar, and when to export - maximising your savings every half hour of the day. The perfect home battery management app for users on Octopus Flux, Economy 7, Economy 10, or any time-of-use tariff. Maximise solar self-consumption, reduce grid import charges, and automate energy arbitrage - all without lifting a finger.

Key Features:
• On-device optimisation - A full optimisation solver runs locally on your phone. Your data never leaves your device for optimisation.

• Automatic scheduling - Set it and forget it. BatteryWiz re-optimises every 30 minutes in the background, adapting to changing conditions throughout the day.

• Inverter control - Sends charge/discharge commands directly to your inverter. Currently supports FoxESS Cloud, with SolarEdge, Huawei, GivEnergy, SMA, and Enphase planned.

• Time-of-use tariff support - Configure your import and export rates with flexible time windows and day-of-week rules. Multi-currency support (GBP, USD, EUR, AUD, NZD, ZAR, and custom). Supports Octopus Flux, Economy 7, Economy 10, and more.

• Solar forecast integration - Connects to Solcast for accurate rooftop PV generation forecasts with intelligent caching and rate-limit-aware refresh.

• Self-learning load forecasting - A hybrid machine learning model learns your household consumption patterns over time, improving its predictions automatically.

• Savings tracking - See your projected savings for today, this month, and all time compared to a standard self-consumption baseline. Know exactly how much BatteryWiz is saving you.

• 24-hour plan view - Visualise your battery's planned schedule across the next 48 half-hour slots, including charge, discharge, grid import, grid export, and state of charge.

• Battery health protection - Configurable degradation penalty discourages unnecessary cycling, and SOC limits keep your battery within safe operating bounds. Optimisation prefers constant charging and discharging power output to prolong battery life.

• Privacy-first - Optimisation runs entirely on-device. API keys are stored in secure storage. No accounts required for core functionality.

Who is BatteryWiz for?
Homes and small businesses with battery storage and, optionally, rooftop solar, on time-of-use electricity tariffs, who want to automatically maximise the return on their investment, where the price difference between off-peak and peak hours makes smart scheduling essential.

Pricing:
BatteryWiz includes a generous 60-day free trial with all features unlocked. After the trial, core features like manual optimisation and plan viewing remain free. A premium subscription unlocks automatic background scheduling, and inverter command sending.

Getting started:
Enter your battery specs (capacity, power limits, efficiency)
Set up your electricity tariff (import and export rates)
Connect your Solcast account for solar forecasts
Add your inverter API credentials
Tap "Run Battery Optimization & Control Now" and watch BatteryWiz compute your optimal schedule
Start saving on your electricity bills today - let BatteryWiz do the thinking for your battery

What’s new

More reliable background optimisation.

Your battery schedule now runs on time even when your phone is in deep sleep or power-saving mode - so cheap-rate windows are no longer missed by Android's battery optimiser.

Scheduling resumes automatically after a phone restart.
A watchdog restores scheduling within 2 hours if it's ever interrupted.
If Android prompts you to allow "exact alarms", tap Allow for the best experience.