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Technical roadmap review [2025]
#5064 · brosaplanella opened on Jun 17, 2025
7
Improve documentation (ongoing)
#3392 · brosaplanella opened on Oct 2, 2023
6

IDAKLU's simultaneous sensitivity corrector fails at tight tolerances
pybamm-team/PyBaMM#5999 · opened on Oct 28, 2026
[Bug]: plot_summary_variables crashes when output_variables contains one variable
pybamm-team/PyBaMM#5996 · opened on Oct 28, 2026
eSOH solves can return a point that is not a root of the eSOH equations
pybamm-team/PyBaMM#5991 · opened on Oct 27, 2026
EISSimulation.plot() should show Nyquist and Bode plots
pybamm-team/PyBaMM#5988 · opened on Oct 27, 2026
[Bug]: BatchStudy.solve silently ignores t_interp
pybamm-team/PyBaMM#5978 · opened on Oct 25, 2026
1
step.string gives unpacking errors or the wrong error for extra whitespace and malformed steps
pybamm-team/PyBaMM#5969 · opened on Oct 22, 2026
[Bug]: QuickPlot does not follow matplotlib's colour cycle
pybamm-team/PyBaMM#5951 · opened on Oct 21, 2026
Citation databases for downstream packages, and reasons for each citation
pybamm-team/PyBaMM#5950 · opened on Oct 21, 2026
2
Deprecate FiniteVolume2D in favour of FiniteVolumeUnstructured
pybamm-team/PyBaMM#5938 · opened on Oct 20, 2026
[Bug]: Vector-field output_variables fail with AttributeError: ... has no attribute 'nodes'
pybamm-team/PyBaMM#5936 · opened on Oct 20, 2026
1
[Bug]: "contact resistance" lowers the voltage but adds no I²R heat with "x-full" and pouch thermal models
pybamm-team/PyBaMM#5879 · opened on Oct 8, 2026
[Bug]: Lumped thermal model fails to discretise with 1+1D current collectors
pybamm-team/PyBaMM#5878 · opened on Oct 8, 2026
[Bug]: Chen2020_composite cannot run a thermal model (per-phase electrode density)
pybamm-team/PyBaMM#5877 · opened on Oct 8, 2026
3
[Bug]: Heat of mixing fails to discretise with a quadratic or quartic particle profile
pybamm-team/PyBaMM#5876 · opened on Oct 8, 2026
Benchmark non-default model options (e.g. lumped thermal) in PR Bencher runs
pybamm-team/PyBaMM#5873 · opened on Oct 8, 2026
FiniteVolume: harmonic face averaging of a bare gradient's factor under Division/Addition
pybamm-team/PyBaMM#5863 · opened on Oct 7, 2026
[Bug]: upwind/downwind operators use the wrong ghost point
pybamm-team/PyBaMM#5860 · opened on Oct 7, 2026
Decide how an ExplicitTimeIntegral treats a gap between joined solutions
pybamm-team/PyBaMM#5847 · opened on Oct 5, 2026
[Bug]: An expression of a time integral fails when the integrand doesn't depend on the state
pybamm-team/PyBaMM#5846 · opened on Oct 5, 2026
[Bug]: Joining solutions with and without sensitivities returns another solve's sensitivities
pybamm-team/PyBaMM#5845 · opened on Oct 5, 2026
1
SEI film resistance loss is not included in heat generation
pybamm-team/PyBaMM#5820 · opened on Sep 28, 2026
1
Refactor battery-model option resolution and validation (tracking)
pybamm-team/PyBaMM#5812 · opened on Sep 28, 2026
2
[Bug]: Defaults derived from "SEI", "SEI on cracks" and "lithium plating" only handle the scalar and negative-electrode tuple forms
pybamm-team/PyBaMM#5807 · opened on Sep 26, 2026
[Bug]: SPM(options) mutates the caller's options dict
pybamm-team/PyBaMM#5801 · opened on Sep 25, 2026
[Bug]: SPM.__init__ compares a class to the string "MPM"
pybamm-team/PyBaMM#5800 · opened on Sep 25, 2026

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Issues

IDAKLU's simultaneous sensitivity corrector fails at tight tolerances

[Bug]: plot_summary_variables crashes when output_variables contains one variable

eSOH solves can return a point that is not a root of the eSOH equations

EISSimulation.plot() should show Nyquist and Bode plots

[Bug]: BatchStudy.solve silently ignores t_interp

step.string gives unpacking errors or the wrong error for extra whitespace and malformed steps

[Bug]: QuickPlot does not follow matplotlib's colour cycle

Citation databases for downstream packages, and reasons for each citation

Deprecate FiniteVolume2D in favour of FiniteVolumeUnstructured

[Bug]: Vector-field output_variables fail with AttributeError: ... has no attribute 'nodes'

[Bug]: "contact resistance" lowers the voltage but adds no I²R heat with "x-full" and pouch thermal models

[Bug]: Lumped thermal model fails to discretise with 1+1D current collectors

[Bug]: Chen2020_composite cannot run a thermal model (per-phase electrode density)

[Bug]: Heat of mixing fails to discretise with a quadratic or quartic particle profile

Benchmark non-default model options (e.g. lumped thermal) in PR Bencher runs

FiniteVolume: harmonic face averaging of a bare gradient's factor under Division/Addition

[Bug]: `upwind`/`downwind` operators use the wrong ghost point

Decide how an ExplicitTimeIntegral treats a gap between joined solutions

[Bug]: An expression of a time integral fails when the integrand doesn't depend on the state

[Bug]: Joining solutions with and without sensitivities returns another solve's sensitivities

SEI film resistance loss is not included in heat generation

Refactor battery-model option resolution and validation (tracking)

[Bug]: Defaults derived from "SEI", "SEI on cracks" and "lithium plating" only handle the scalar and negative-electrode tuple forms

[Bug]: `SPM(options)` mutates the caller's options dict

[Bug]: `SPM.init` compares a class to the string `"MPM"`