0.8.8

Changes Made by @pvandenh

Bug 1 — extreme_mode was never written to the config cache

There was no if extreme_mode is not None: guard block anywhere in async_set_dlb_config(). The extreme_mode parameter was accepted by the function signature but never actually applied to cfg["extreme"]. Toggling Extreme Mode sent the correct byte to the charger on the first call, but the cache remained 0x00, so the next coordinator poll would overwrite it back to off.

Bug 2 — dlb_enabled block was unconditionally clobbering extreme

The dlb_enabled update block contained a spurious line that reset cfg["extreme"] as a side effect:

Before — BUG

if dlb_enabled is not None:
    cfg["dlb_enabled"] = 0x01 if dlb_enabled else 0x00
    cfg["extreme"] = 0x01 if extreme_mode else 0x00  # ← always ran when dlb_enabled changed

Any call that touched dlb_enabled (e.g. toggling the master PV Dynamic Load Balance switch) would reset extreme to 0x00 because extreme_mode is None in those calls — and None is falsy.

Fix

The two concerns are now separated into independent guards, matching the pattern used correctly by every other field (night_mode, anti_overload, etc.):

After — FIXED

if dlb_enabled is not None:
    cfg["dlb_enabled"] = 0x01 if dlb_enabled else 0x00

if extreme_mode is not None:
    cfg["extreme"] = 0x01 if extreme_mode else 0x00

Implementation Notes

Change is entirely contained in coordinator.py — no entity files, protocol layer, or config flow affected.
All other DLB config fields (night_mode, dlb_mode, anti_overload, etc.) were already using the correct independent-guard pattern and are unaffected.
The optimistic state handling in BenyWifiExtremeModeSwitch (which correctly snaps the UI on press and clears on coordinator refresh) was not at fault and is unchanged.

Testing

Hardware: Beny Charger BCP-A2N-L (firmware 1.28) with Solar DLB module
Verified: Extreme Mode toggle now persists correctly across coordinator refresh cycles
Regression: All other DLB switches (PV Dynamic Load Balance, Night Mode, Anti Overload) confirmed unaffected — toggling each no longer has any side effect on the others