circuit3d/js/simulate.js:356 iterates batteries and solves each one separately:
bats.forEach((bat, bi) => { ... });Every other battery in the circuit is treated as an ordinary path element with no voltage contribution, which is electrically a zero-ohm wire. Two 9V batteries in series report the same current as one. Two in opposition report current where there should be none.
Should be
A proper solver handles multiple independent sources natively, as simultaneous stamps in one matrix. This is another consequence of the missing node-voltage solve rather than a separate bug, so it should be fixed by the same change and is filed here so it is not forgotten when that lands.
Blocked on the solver decision.
Found in the 2026-08-16 audit (30-agent sweep, 481 findings). Every line reference was verified against main at the time of filing.
circuit3d/js/simulate.js:356iterates batteries and solves each one separately:Every other battery in the circuit is treated as an ordinary path element with no voltage contribution, which is electrically a zero-ohm wire. Two 9V batteries in series report the same current as one. Two in opposition report current where there should be none.
Should be
A proper solver handles multiple independent sources natively, as simultaneous stamps in one matrix. This is another consequence of the missing node-voltage solve rather than a separate bug, so it should be fixed by the same change and is filed here so it is not forgotten when that lands.
Blocked on the solver decision.
Found in the 2026-08-16 audit (30-agent sweep, 481 findings). Every line reference was verified against
mainat the time of filing.