{"id":13314,"date":"2026-04-22T23:58:47","date_gmt":"2026-04-22T15:58:47","guid":{"rendered":"https:\/\/www.balderpower.com\/?post_type=product&p=13314"},"modified":"2026-04-23T03:52:34","modified_gmt":"2026-04-22T19:52:34","slug":"acer-ap18c4k-battery-wholesale","status":"publish","type":"product","link":"https:\/\/www.balderpower.com\/pt_br\/acer-ap18c4k-battery-wholesale\/","title":{"rendered":"Acer AP18C4K 11.4V 48Wh 3-Cell Aspire 3 \/ Aspire 5 \/ Swift 3 Replacement Battery Wholesale"},"content":{"rendered":"

The AP18C4K is one of the most widely deployed battery SKUs in Acer’s 2018\u20132021 device generation \u2014 a deliberate platform decision by Acer to consolidate power supply across six distinct product lines using a single 11.4V \/ 48Wh \/ 3-cell Li-ion pack. The OEM part number AP18C4K<\/code> (also coded KT00304012<\/code>, KT.00304.012<\/code>, and cell-string reference 3ICP5\/81\/68<\/code>) fits the Aspire 3 (A315-42, A315-42G, A315-54 series), Aspire 5 (A514-52, A514-52G, A515-43, A515-43G, A515-44, A515-44G, A515-54, A515-54G, A515-56, A515-56T), Swift 3 (SF314-41, SF314-57, SF314-58, SF314-59), Swift S40-51, Spin 3 (SP313-51N, SP314-54N), and TravelMate P2 (P214-52, P214-53). For wholesale buyers and repair centers, this breadth means a single AP18C4K stock position covers Acer’s best-selling budget and midrange Intel-platform notebooks across the 2018\u20132021 production window \u2014 a higher-volume and longer repair-cycle opportunity than most single-model battery SKUs.<\/p>\n

A point that competitor pages consistently fail to clarify: the AP18C4K (11.4V, 3ICP5\/81\/68<\/code>) and AP18C8K<\/strong> <\/a>(11.25V, 3INP5\/82\/70<\/code>) are distinct part numbers. Some devices in overlapping model series ship with one or the other depending on their production batch and regional configuration. Both use the same physical connector and form factor, and many aftermarket sellers list them as fully interchangeable \u2014 but the BMS in certain devices may flag a voltage mismatch and refuse to charge a unit outside its expected spec range. Best practice for procurement teams managing a mixed fleet: check the part number label on the original battery, not only the laptop model number. This is the most common sourcing error for this battery family.<\/p>\n

The 3-cell cylindrical configuration in the AP18C4K (3ICP5\/81\/68<\/code> \u2014 three cells in a 3S1P series string) operates at a nominal 3.8V per cell, charging to 4.2V cutoff. The pack is rated for the standard 15-inch and 14-inch Acer chassis depth, and the connector is a standard rectangular ZH-type interface. BMS protection includes over-charge, over-discharge, short-circuit, and NTC temperature sensing \u2014 the same protection architecture as the AP19B5L<\/strong><\/a>, but in a lower-voltage, lower-capacity 3-cell format suited to thinner chassis designs (the Swift S40-51 is 17.95mm thin). Repair demand for the AP18C4K is broad: the Aspire 3 and Aspire 5 installed base from 2019\u20132021 is now past peak battery lifespan in most markets, generating consistent replacement volume.<\/p>","protected":false},"excerpt":{"rendered":"