Sensing the true state of charge of LFP storage
Adaptive correction of state of charge, licensed to energy storage integrators.
20% to 80%
The range where an LFP cell's voltage barely moves, so voltage alone cannot resolve charge level.
10% to 20%
Capacity operators keep in reserve because the reading cannot be trusted.
About 5 seconds
A short current pulse gives a fresh reading of the cell's true charge.
LFP storage cannot sense its own charge level
Battery energy storage systems depend on knowing how much energy is left. On LFP, the dominant storage chemistry, the usual signals fail.
A flat voltage plateau
Between 20% and 80% state of charge the LFP voltage curve is nearly flat, so voltage alone cannot resolve charge level.
Counting drifts
Systems count current instead, and the error keeps growing without recalibration.
Capacity held back
Operators keep 10% to 20% of capacity in reserve to avoid overcharge or depletion from reading errors..
The Alulon Sensing Engine
Each pulse yields a fresh state-of-charge reading from the shape and bending of the terminal voltage response, independent of open-circuit voltage and current counting.
STEP 1 A short current step A pulse of about five seconds, applied during normal operation.
STEP 2 We read how the voltage bends We read the shape of the response, not its level.
STEP 3 Adaptive correction Each checkpoint corrects the count and learns its drift.
What accurate charge sensing unlocks
Accurate state of charge protects the battery and supports the energy guarantees integrators sell.
Guarantees
Buyers contract for guaranteed energy, which can only be met and proven with accurate SoC estimates.
Released capacity
Our model shows about 4% of capacity could be released from reserve, worth about $1.10 per kWh a year to the end customer.
Model estimate, not a field result.
Early warning
Owners learn early whether a system delivers the energy promised, before a claim is needed.
FOR INTEGRATORS
From evaluation to license
We work with a small number of energy storage integrators. On-site evaluations are planned from 2027.
Evaluation
Side-by-side test with our reference board and firmware.
Design-in
Our firmware adapted to your system.
License
Per kWh, paid when a system ships with the engine inside.
Launch your projects
Send us the specs. We’ll deliver the breakthrough.