{"product_id":"i-mate-k-jam-replacement-battery-37v-2800mah-li-ion","title":"I-Mate K-Jam Compatible Battery 3.7V 2800mAh WIZA16","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-Mate K-Jam — 3.7V Li-ion 2800mAh Replacement Battery (WIZA16)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V Li-ion cell rated at 2800mAh (10.36Wh), built to replace the original power cell in the I-Mate K-Jam. The K-Jam is a Windows Mobile smartphone from the mid-2000s that combined phone and PDA functions in a sliding QWERTY form factor. This replacement matches OEM part numbers WIZA16, 35H00062-00M, and 35H00062-03M.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK-Jam battery compatibility:\u003c\/strong\u003e\n    The K-Jam shares its battery footprint and connector pinout across its OEM part revisions — 35H00062-00M and 35H00062-03M are hardware revisions of the same cell, same dimensions (51.86 × 38.97 × 12.48mm), same 3.7V nominal rail. All three OEM numbers fit the same battery bay without modification.\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 K-Jam platform and monitored BMS communication. The protection circuit engaged correctly at low-voltage cutoff, and the charge IC accepted the cell without error flags on the second charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    On first use after installing this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the K-Jam's fuel gauge IC a full discharge curve against the new cell before it starts reporting percentages you can trust.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the K-Jam shuts down suddenly at 20–30% charge remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC's stored discharge curve no longer matches the actual cell's voltage-versus-capacity behaviour. The K-Jam's modem radio draws a sharp current spike during a call or data session. If the cell voltage drops below the BMS cutoff threshold under that load — even momentarily — the phone shuts down to protect the cell, regardless of what percentage the OS was showing. After a full recalibration cycle, the gauge learns where the real voltage cliff sits and the OS percentage tracking tightens up considerably.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eK-Jam not powering on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge slowly in storage. If this battery sat below 2.5V per cell before installation, the BMS locks out charging as a protection measure and the phone will not respond to the charger or power button. Connect the K-Jam to a charger and leave it undisturbed for 20–30 minutes — the charge IC trickle-charges the cell below the BMS threshold until voltage recovers to roughly 2.9V, at which point normal charging resumes and the device powers on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405262127194,"sku":"BWCS-WIZA16HL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405262159962,"sku":"BWCS-WIZA16HL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405262192730,"sku":"BWCS-WIZA16HL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WIZA16HL-1.webp?v=1779370368","url":"https:\/\/batteryweb.com\/products\/i-mate-k-jam-replacement-battery-37v-2800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}