{"product_id":"exfo-max-700-replacement-battery-37v-10000mah-li-polymer","title":"EXFO GP-2209 MAX-700 Compatible Battery 3.7V 10000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEXFO MAX-700 \/ MAX-900 Series — 3.7V Li-Polymer Replacement Battery (GP-2209)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 10000mAh Li-Polymer pack replaces the GP-2209 battery in the EXFO MAX-700, MAX-700B\/C, MAX-900, and MAX-900FIP optical power meters and light source testers. It fits the same battery bay and connector used across this series. Capacity is drawn from product data at 37Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMAX-700 and MAX-900 platform compatibility:\u003c\/strong\u003e\n    Both series share the same 3.7V single-cell Li-Polymer architecture, bay dimensions, and BMS handshake protocol — that is why one pack covers multiple units in the line. The connector pinout and charge-termination signal are identical across MAX-700, MAX-700B\/C, MAX-900, and MAX-900FIP.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge, discharge, and probe-power-up cycles on the MAX-700 platform. The BMS accepted the new cell without fault codes, and the charge-termination handshake completed cleanly at 4.2V under the instrument's onboard charger.\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 instrument's menu before heading to site. The MAX-700 and MAX-900 map battery state during that calibration pass — skip it and the low-battery indicator will trigger early on your 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\"\u003eMAX-700 and MAX-900 shutting down mid-measurement with a charged battery showing\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MAX-700's optical module draws a short current spike each time a probe or port initialises — enough to trip the BMS undervoltage threshold if the cell is aged or the pack is cold. The instrument reads a healthy percentage on screen, then cuts out without warning during the measurement pass. This is a BMS protection event, not a firmware fault. A new cell with full charge capacity handles the initialisation spike without hitting the cutoff floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePack will not charge after the instrument sat unused in a carry case for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells that self-discharge below roughly 2.5V per cell enter a deep-discharge state — the BMS locks the charge FET to prevent thermal runaway on a damaged cell. The EXFO charger circuit sees a locked pack and stops trying, leaving the indicator light unresponsive. A replacement pack bypasses this entirely. If you want to attempt recovery on the old pack first, a bench charger with a Li-Po recovery mode can trickle charge at 0.1C up to 3.0V before handing back to the instrument's onboard charger.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360549929050,"sku":"BWCS-EFX700SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360549961818,"sku":"BWCS-EFX700SL-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360549994586,"sku":"BWCS-EFX700SL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EFX700SL-1.webp?v=1778615946","url":"https:\/\/batteryweb.com\/products\/exfo-max-700-replacement-battery-37v-10000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}