{"product_id":"peaktech-p-9020-replacement-battery-111v-2600mah-li-ion","title":"Peaktech P 9020 11.1V Replacement Battery 301-62-412","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePeaktech P 9020 \/ P9021 \/ P9020A — 11.1V Li-ion Replacement Battery (301-62-412)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 2600mAh Li-ion pack replaces OEM part 301-62-412 in the Peaktech P 9020, P9021, and P9020A digital multimeters. These are portable field measurement instruments used in electrical diagnostics and survey work. Voltage and capacity match OEM spec exactly — no modification needed at the connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP 9020 \/ P9021 \/ P9020A compatibility:\u003c\/strong\u003e\n    All three models share the same 11.1V three-cell Li-ion architecture, connector pinout, and BMS handshake protocol — which is why a single pack covers the range. Swapping between models on the same replacement pack works because the instrument reads cell voltage directly, not a proprietary fuel gauge signal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through probe initialisation sequences and sustained logging loads. The BMS held charge delivery stable across measurement bursts and flagged over-discharge cutoff at the correct low-cell threshold without false trips.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration before field deployment:\u003c\/strong\u003e\n    After fitting this pack, run a full calibration cycle through the P 9020 instrument menu before taking it to site. The instrument maps battery state during calibration — skipping this step causes the low-battery indicator to fire prematurely on the first measurement session, even with a full charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff at probe power-up on the P 9020\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the P 9020 initialises its probe module, it draws a brief current spike as internal measurement circuits come online. An aged or deeply discharged cell cannot sustain that spike without dropping below the BMS cutoff threshold — so the instrument shuts off at the moment you'd expect it to boot. A new pack with healthy internal resistance handles the inrush without a voltage sag. If the instrument cuts out only at probe-on and not during standby, that inrush trip is almost always the cause.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eReadings resetting or drifting mid-session during data logging\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSustained sensor load during a logging session draws more current than standby — and a degraded cell shows voltage dropout under that load even when the idle battery indicator looks fine. When cell voltage sags below the instrument's internal reference floor, the P 9020 resets its measurement cycle to protect data integrity, which shows up as sudden reading resets or drifting values mid-log. This is not a probe or firmware fault — it is a sustained-load voltage issue. Replace the pack and confirm resting cell voltage holds above 10.8V under probe load before the next session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360579125338,"sku":"BWCS-PKH902SL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360579158106,"sku":"BWCS-PKH902SL-2","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360579190874,"sku":"BWCS-PKH902SL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PKH902SL-1.webp?v=1778616006","url":"https:\/\/batteryweb.com\/products\/peaktech-p-9020-replacement-battery-111v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}