MacBook OEM, Aftermarket and Knock-Off batteries

Batteries

MacBook Pro 13" A1502 2015E Model: A1582

PCB Manufactured by COMPEQ, Controller BQ20Z451, board is secured with torx screws (Most knockoffs use philips)

Every cell has QR code and lots of numbers including unique serial number

Main terminals are welded instead of being soldered, it also uses battery balancing wires and thermal couple (absent on almost all knockoff batteries). 15A fuse is clearly seen.

Thermal cutoff device is present on every cell, thermal couple also visible in center

Macbook Pro 15" A1398 2013L-2014M Model: A1494

Original battery disassembled from untouched device.

Allmost all components secured with strong adhesive, gold plating

Every cell marked with QR code and some sort of serial number (last line)

PCB Manufacturer is COMPEQ (Same as all Logicboards). Thermocouple present (absent on most Knock-off boards). Smartbattery controller: BQ20Z451

Every cell has HC77AY-1 Thermal Cutoff Device placed on input.

Macbook Pro 13" A1706 Touch Bar 2016 Model: A1819

Original battery disassembled from untouched device.

A1819 recto (manufacturer : Simplo Technology (Changshu) Inc.

A1819 recto pcb

A1819 verso

A1819 verso pcb (black sticker peeled off)

A1819 verso thermalcouple (one per cell)

Aftermarket Batteries

MacBook Pro 13" A1502 2015E Model: LMP A1582

LMP is a Swiss firm, manufacturing in China. it is delivered in fancy package with glue remover and pry tool. Glue remover is pure acetone, not recommended. Got EC / TÜV certificates, does not even try to look like OEM-Apple battery. AHT Test passes with no hardware issues found, system information reveals same serialnumbr as on sticker.

Back side of the board. Note much more advanced design compared to regular knock-offs. Thermal pair is present and balanced charging implemented. Pretty suprised, instead of battery controller it actually uses ARM Microcontroller Atmel samd 10u. This board should not be considered as cheap aftermarket since it implements pretty decent charging scheme with high level of control and cell balancing capability. Quite expensive 300LSE adhesive is probably not the best choice, so i would rather replace it with floam before installing.

Exposed cell packs, completely blank front side of the PCB

Apple MacBook Pro 15 A1398 (Late 2013, Mid 2014) Model: LMP A1582

Pretty solid battery. Full balance-charging implemented, temperature sensor could be found in the middle of the battery. Compared to Apple betterie, No thermal-protection devices on individual cells.

Some basic liquid protection like on Apple batteries. Slowburn fuse, thermal pair. Controller is the same Atmel SAMD10U