# dalathegreat/Battery-Emulator

This revolutionary software enables EV battery packs to be easily reused for stationary storage in combination with solar inverters

Repository: https://github.com/dalathegreat/Battery-Emulator
Canonical: https://ross.abutalabs.com/products/battery-emulator
Language: C++
License: GPL-3.0
License Family: copyleft
Last push: 2026-08-26T20:04:04+00:00

## Health v2 (maintenance only)
Score: 93/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 92
- inputs: {"age_days": 1291, "days_push": 7, "days_rel": 7, "gap_med": 8.0, "n_releases_24m": 71}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2895, forks 393 (observed 2026-08-28T04:07:28.626488+00:00)

## What it is
Battery-Emulator is firmware that lets second-life EV battery packs be reused as stationary home energy storage by translating communication protocols between the battery and solar/grid inverters. It runs on compatible hardware (e.g., ESP32-based boards) and supports many EV battery and inverter combinations in a plug-and-play fashion.

## Use cases
- repurpose a Nissan LEAF battery pack for home solar storage
- connect an EV battery to a solar inverter
- build a cheap DIY home battery from a salvaged EV pack
- translate CAN bus protocols between EV battery and inverter
- set up second-life battery storage for off-grid power
- avoid buying an expensive commercial home battery system

## When to choose
- you have a salvaged or end-of-life EV battery pack you want to reuse
- your solar inverter is on the supported list and you want cheap storage capacity
- you want a plug-and-play translation layer instead of writing custom battery firmware

## When to avoid
- you are not comfortable working with high-voltage systems and local regulations
- your battery or inverter model is not supported
- you need a certified, warrantied commercial battery solution

## Facets
- artifact type: application
- maturity: active
- function: embedded, middleware, configuration-management
- domain: iot, energy, hardware, embedded-systems
- platform: embedded, iot, cpp
- tags: battery-emulator, ev-battery, solar-inverter, second-life-battery, stationary-storage, esp32, can-bus, home-energy

## Member repositories
- dalathegreat/Battery-Emulator (main) score 93

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:28.626488+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:35:16.171977+00:00, confidence not recorded.
  - readme: https://github.com/dalathegreat/Battery-Emulator (fetched 2026-08-28T04:07:28.626488+00:00, sha 9e3cb81834f9)
- Data as of 2026-08-30T08:39:29.467469+00:00.