WB-UPS v.3 hardware revisions

The batch number (Batch No.) is shown on a label on the side of the enclosure or on the printed circuit board.

Revision	Batches	Production period	Changes from the previous revision
v3.6	v3.6A - ...	08.2026 - ...	Minor PCB layout changes to optimize manufacturing
v3.5	v3.5B/2, v3.5C, v3.5D, v3.5E, v3.5E/1, v3.5E/2, v3.5E/3, v3.5E/4, v3.5F, v3.5F/1, v3.5F/2, v3.5F/3, v3.5G, v3.5G/1, v3.5G/2, v3.5G/3, v3.5G/4	09.2025 - 07.2026	Matte-finish enclosures
v3.5	v3.5A, v3.5A/1, v3.5A/2, v3.5A/3, v3.5B, v3.5B/1	09.2025	Minor circuit and routing changes Various internal manufacturing optimizations
v3.3	v3.3D/1, v3.3D/2, v3.3E, v3.3E/1	07.2025 - 08.2025	Fixed incorrect output-voltage control mode ERRWBUPS30001
v3.3	v3.3C/1, v3.3D	07.2025	New batteries with lower internal resistance
v3.3	v3.3B, v3.3C	05.2025 - 07.2025	First production batches
v3.3	v3.3A	05.2025	Test batch