{"product_id":"matco-tools-maximus-tpms30-replacement-battery-74v-2100mah-li-polymer","title":"Matco Tools TPMS3.0 Replacement Battery 7.4V 2100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMatco Tools Maximus TPMS3.0 \/ MAXTPMS 2.0 — 7.4V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2100mAh lithium-polymer pack replaces the internal battery in the Matco Tools Maximus TPMS3.0, MAXTPMS 2.0, MDMAXTPMS2, and MDMAXTPMS3G handheld TPMS diagnostic tools. These are portable, technician-grade devices used to activate, program, and relearn TPMS sensors at the wheel. Dimensions are 68.00 × 50.00 × 10.30mm — verify fitment against the existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model fitment — TPMS3.0 and MAXTPMS 2.0 series:\u003c\/strong\u003e\n    Both generations of the Maximus TPMS platform share the same 7.4V cell form factor, connector pinout, and BMS handshake protocol. A single replacement covers the MDMAXTPMS2 and MDMAXTPMS3G variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through sensor activation sequences and relearn procedures on the TPMS3.0 platform. The BMS maintained stable voltage delivery through repeated RF burst transmissions during sensor wake-up — no cutoff events under normal operating load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the TPMS tool:\u003c\/strong\u003e\n    After fitting this battery, run a full vehicle relearn sequence before field use. The TPMS3.0 maps cell state during active sensor sessions, and skipping this step causes the low-battery indicator to trigger prematurely on the first job.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff during sensor initialisation on the TPMS3.0\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the TPMS3.0 activates a sensor, it fires a low-frequency RF burst that draws a short current spike from the battery. On an aged or partially discharged cell, this spike can push the instantaneous draw past the BMS overcurrent threshold. The tool shuts off mid-activation — not because the battery is empty, but because the BMS tripped on peak current. A fresh cell with healthy internal resistance handles the spike without triggering cutoff. If you see this on a new pack, ensure the battery is charged above 7.8V before attempting sensor activation cycles.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping around at startup after the tool sits unused\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the TPMS tool sits in a case for several weeks, the cell self-discharges and the tool's voltage-threshold indicator loses its reference point for the new cell's discharge curve. At power-on, the display may show 80% then drop to 30% within the first few activations. This is the indicator recalibrating to the actual resting voltage — not a fault with the pack. Run two or three full sensor activation sessions back-to-back and the percentage reading will stabilise. If the tool refuses to power on after extended storage, charge for at least 30 minutes before attempting a restart.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360452542554,"sku":"BWCS-VDT570SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360452575322,"sku":"BWCS-VDT570SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360452608090,"sku":"BWCS-VDT570SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VDT570SL-1.webp?v=1778614761","url":"https:\/\/batteryweb.com\/products\/matco-tools-maximus-tpms30-replacement-battery-74v-2100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}