Powering Change
Installing since 2010 · 0118 951 4490 · info@spiritenergy.co.uk
MyEnergi is a British company focused on creating smart energy products that help homeowners make the most of their solar generation. Their core product range includes the Zappi EV charger, the Eddi hot water diverter, and the libbi home battery storage system. The three products are designed to work together seamlessly, all managed through the MyEnergi app. 
You can read about the other products on these links: Eddi hot water diverter, Zappi car charger.
The libbi is MyEnergi's home battery storage system, designed as a fully integrated all-in-one unit combining the inverter and battery in a single compact, wall-mounted enclosure. Unlike traditional systems with separate components, libbi keeps cables hidden and simplifies installation, and is IP65 rated for indoor or outdoor installation. A separate controller unit handles monitoring and settings and must be installed indoors.
The libbi is modular by design, allowing you to start with 5kWh of storage and expand up to 20kWh as your needs chang, whether you add an EV, switch tariff, or increase your solar generation.
Available configurations:
The battery chemistry is lithium iron phosphate (LFP), which is now the standard chemistry across most residential battery systems. LFP offers a longer cycle life than older lithium manganese cobalt (LMNC) chemistries, typically 8,000–10,000 lifecycles versus around 4,500, and contains no cobalt.
The libbi is flexible in how it can be configured:
DC coupling is generally more efficient as it avoids an additional conversion step between the panels and the battery.
Self-consumption: The libbi automatically stores surplus solar generation for use later in the day, maximising the proportion of your own electricity you use on site.
Time-of-use tariff optimisation: The libbi makes intelligent decisions about when to store and when to discharge based on your energy usage, solar generation, and electricity tariff. It supports scheduled charging from the grid during off-peak periods to take advantage of cheap overnight rates.
Backup power: The libbi offers optional blackout backup, providing instant energy availability to a dedicated socket or lighting circuit in the event of a power cut. Note that this is a partial backup solution, it does not provide whole-home backup in the way that systems such as the Tesla Powerwall 3 do.
Monitoring: All MyEnergi products are managed through the MyEnergi app, which provides real-time visibility of battery state of charge, solar generation, energy usage, and tariff integration. The libbi controller includes WiFi and Ethernet connectivity as standard.
Integration with other MyEnergi products: The libbi works alongside the Zappi EV charger and Eddi hot water diverter, with the MyEnergi app coordinating all three to prioritise where surplus solar is directed.
