{"product_id":"vikli-e05-v2015-replacement-battery-37v-400mah-li-polymer","title":"ViKLi E05 V2015 Replacement Battery 3.7V 400mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eViKLi E05 V2015 — 3.7V Li-Polymer Replacement Battery (V2015-E05)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 400mAh lithium-polymer cell replaces the original battery in the ViKLi E05 V2015 compact flashlight. It matches the OEM part numbers V2015-E05 and PL-762229. The 30.10 x 22.00 x 8.00mm form factor fits the original battery compartment without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE05 V2015 platform fit:\u003c\/strong\u003e\n    The V2015-E05 and PL-762229 references both point to the same flat lithium-polymer cell used across this flashlight variant. The compact driver circuit in the E05 runs directly off the 3.7V nominal rail, so voltage tolerance at the cell level matters — this cell holds within spec at both full charge and low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the E05 driver board. The BMS cutoff triggered cleanly at the low-voltage threshold, and the cell accepted a full charge without thermal deviation above ambient.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLi-polymer storage tip for compact torch drivers:\u003c\/strong\u003e\n    If the E05 sits unused for more than two months, store it with the cell partially discharged — around 3.7V to 3.8V. Leaving a small lithium-polymer cell at full charge for extended periods accelerates capacity loss in thin-format cells faster than it does in cylindrical lithium-ion cells.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlashlight driver stepping down output before the indicator reads low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe E05 driver uses a constant-current circuit that monitors cell voltage in real time. As the lithium-polymer cell drops below roughly 3.5V under load, the driver reduces output current to protect the cell — this appears as visible dimming before any low-battery indicator activates. The indicator threshold is measured at rest voltage, not under load, so the gap between dimming and the indicator can be noticeable. Switching to a lower brightness mode at the first sign of dimming extends usable output and prevents the driver from hitting hard cutoff unexpectedly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCell not taking a charge after the flashlight sat unused for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThin lithium-polymer cells self-discharge at a higher rate than cylindrical cells. If the E05 has been stored flat for several months, the cell voltage may have dropped below 3.0V — the threshold where most standard chargers refuse to initiate a charge cycle. Some chargers have a recovery or pre-charge mode that applies a low-current trickle until the cell reaches 3.0V, at which point normal charging resumes. Check the cell voltage with a multimeter before concluding the cell is dead — if it reads between 2.5V and 3.0V, a charger with a recovery function can often bring it back.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377520509018,"sku":"BWCS-VKE515FT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377520541786,"sku":"BWCS-VKE515FT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377520574554,"sku":"BWCS-VKE515FT-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VKE515FT-1.webp?v=1778767222","url":"https:\/\/batteryweb.com\/products\/vikli-e05-v2015-replacement-battery-37v-400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}