AP21B7Q Battery Replacement for Acer Predator TRITON 300 SE PT314-51S PT314-52S Predator Helios Neo 14 PHN14-51 16 PTN16-51 AN14-41 Swift X SFX16-61G SFX14-71G Predator Triton 14 PT14-51 15.48V 76Wh

Compatible Part NumberAP21B7Q, QKT.00407.014Compatible ModelReplacement for Acer Nitro Seriesfor Acer Nitro 4 (AN14-41) Series;Compatible ModelReplacement forAcer Predator Helios Neo 14 (PHN14-51) Series: PHN14-51-72PG, PHN14-51-77Z6, PHN14-51-784P, PHN14-51-78, PHN14-51-797W, PHN14-51-90N4, PHN14-51-90PD, PHN14-51-91G5, PHN14-51-92E0, PHN14-51-93HS, PHN14-51-949K, PHN14-51-94FF, PHN14-51-94M2, PHN14-51-954H, PHN14-51-95HR, PHN14-51-9793, PHN14-51-98B1, PHN14-51-99PSCompatible ModelReplacement for Acer Predator Triton 14 (PT14-51) Series: PT14-51-783U, PT14-51-7849, PT14-51-78B4, PT14-51-78TX, PT14-51-796Q, PT14-51-7979, PT14-51-9021Compatible ModelReplacement for Acer Predator Triton 300 SE (PT314-51s, PT314-52s) Series: PT314-51s-51NZ, PT314-51S-52ML, PT314-51S-52X6, PT314-51S-552L, PT314-51S-55FA, PT314-51s-56RF, PT314-51s-57U9, PT314-51S-57YJ, PT314-51s-599S, PT314-51s-70CS, PT314-51s-70D6, PT314-51S-70Q6, PT314-51S-715F, PT314-51S-71DD, PT314-51S-71K0, PT314-51S-71UP, PT314-51s-71UU, PT314-51S-71YP, PT314-51s-721G, PT314-51S-72F8, PT314-51S-7309, PT314-51S-73DW, PT314-51s-73N5, PT314-51S-73P9, PT314-51s-74WTCompatible ModelPT314-51S-75B3, PT314-51S-765X, PT314-51s-76DC, PT314-51S-76E9, PT314-51s-76JL, PT314-51s-76QN, PT314-51S-76WH, PT314-51S-7795, PT314-51s-78BL, PT314-51s-78LZ, PT314-51s-78T1, PT314-51s-7948, PT314-51S-79B6, PT314-51s-79FK, PT314-51S-79G6, PT314-51S-79L0, PT314-51s-79TY, PT314-52s-70PFCompatible ModelReplacement for Acer Predator Triton Neo 16 (PTN16-51) Series: PTN16-51-50FT, PTN16-51-52C0, PTN16-51-71D1, PTN16-51-71DY, PTN16-51-71WD, PTN16-51-72AV, PTN16-51-72FJ, PTN16-51-72K6, PTN16-51-72RK, PTN16-51-73KS, PTN16-51-73R3, PTN16-51-74LD, PTN16-51-74QK, PTN16-51-751L, PTN16-51-76U3, PTN16-51-76VA, PTN16-51-772J, PTN16-51-779B, PTN16-51-78JY, PTN16-51-78TC, PTN16-51-790R, PTN16-51-79XG, PTN16-51-90AA, PTN16-51-90B6, PTN16-51-90E7, PTN16-51-90FQ, PTN16-51-91BP, PTN16-51-9229, PTN16-51-928RCompatible ModelPTN16-51-92GF, PTN16-51-92HJ, PTN16-51-92XC, PTN16-51-932N, PTN16-51-936A, PTN16-51-93CL, PTN16-51-940H, PTN16-51-94VH, PTN16-51-94W8, PTN16-51-9516, PTN16-51-95EP, PTN16-51-95RY, PTN16-51-965H, PTN16-51-9695, PTN16-51-97LF, PTN16-51-984P, PTN16-51-988U, PTN16-51-98F1, PTN16-51-99AM, PTN16-51-99S4, PTN16-51-99WDCompatible ModelReplacement for Acer Swift X 14 (SFX14-71G) Series: SFX14-71G-521Z, SFX14-71G-52ZX, SFX14-71G-55ZW, SFX14-71G-588D, SFX14-71G-5911, SFX14-71G-59RB, SFX14-71G-70KB, SFX14-71G-71A3, SFX14-71G-71Y9, SFX14-71G-72KP, SFX14-71G-739F, SFX14-71G-74B0, SFX14-71G-74EQ, SFX14-71G-74H3, SFX14-71G-754D, SFX14-71G-7591, SFX14-71G-75CV, SFX14-71G-76A8, SFX14-71G-76LC, SFX14-71G-77BA, SFX14-71G-77HD, SFX14-71G-77ZB, SFX14-71G-783K, SFX14-71G-7841, SFX14-71G-789M, SFX14-71G-78N7, SFX14-71G-7978Compatible ModelReplacement for Acer Swift X 16 (SFX16-61G) Series: SFX16-61G-R0GZ, SFX16-61G-R0T8, SFX16-61G-R0VH, SFX16-61G-R3AZ, SFX16-61G-R3NJ, SFX16-61G-R4AV, SFX16-61G-R4EP, SFX16-61G-R4J6, SFX16-61G-R73A, SFX16-61G-R7Z1, SFX16-61G-R9DR, SFX16-61G-R9VDAttentionIf you install the battery, you find that the laptop cannot detect the battery or the battery level cannot be displayed normally. Please check whether the battery cable is installed properly. Sometimes the battery cannot be charged because the cable is not fixed properly. What do I need to be aware of when I receive a battery?
You need to check its appearance, confirm the model, read the instruction manual. Cycle and charge it 5 to 6 times to activate the maximum usage space of the battery. When not in use temporarily, charge the battery to 50%-60%.

What should I do if laptop won't boot up after installing a new battery?
1.Check if the battery is properly seated and connections are clean. 2.Try charging it or use the adapter alone to start. 3.Examine hardware links, like RAM and adapters. 4.Reset BIOS settings if needed. 5.Enter Safe Mode to fix system issues.

How should I do if the battery is not recognised?
If i