Philips Pronto TSU-9600 Compatible Battery 3.7V 2200mAh

Philips Pronto TSU-9600 / TSU-9800 — 3.7V Li-ion Replacement Battery (PB9600)

This is a 3.7V Li-ion battery rated at 2200mAh (8.14Wh), built to the same spec as the original PB9600. It fits the Philips Pronto TSU-9600 and TSU-9800 programmable touchscreen remotes. When the original cell degrades, the touchscreen dims, IR range drops, and the remote eventually stops responding — this swap restores full function.

• TSU-9600 and TSU-9800 shared platform: Both remotes run on the same internal battery bay, connector, and voltage rail. The PB9600 part number covers both units because Philips used the same cell across the platform revision — swapping to the TSU-9800 did not change the power architecture.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the TSU-9600 platform. The BMS accepted the charge handshake cleanly and the touchscreen came up at full brightness without a reset cycle.
• Connector seating on the TSU-9600: The JST-style connector on this remote sits under a small retaining tab. Press the tab down before pulling the old connector — forcing it sideways cracks the tab and makes future swaps harder. Seat the new connector until it clicks.

Why the TSU-9600 touchscreen goes dim before the remote stops responding entirely

The Pronto TSU-9600 backlight draws more current than the IR transmitter, so as the cell ages and internal resistance climbs, the touchscreen dims first while basic IR commands still fire. This makes it easy to underestimate how far the battery has degraded. By the time IR range drops noticeably, the cell is typically below 3.5V under load. Swap the battery at the first sign of consistent dimming — don't wait for the remote to stop transmitting.

TSU-9600 shows a charging indicator but won't power on after battery swap

This happens when the new cell arrives below the BMS wake threshold — typically under 3.0V after extended shelf storage. The remote's charging circuit will still supply current, but the main board won't boot until the cell reaches approximately 3.2V. Leave it on charge for 20–30 minutes before attempting to power it on. If the charging indicator still won't appear, check that the connector is fully seated and the retaining tab has clicked into place.