Plug in the soldering iron. Wait for it to heat up… test by tapping solder on to the soldering iron tip. Having ‘tinned’ the soldering tip, apply the tip to the component leg and PCB. If the component leg is comparatively ‘thick’, apply more heat to the leg than the PCB. Tap the solder jointly on the component leg and the iron tip. If the component leg is at the right temperature, the solder will flow and make a sound electrical connection. If the component leg is not at the right temperature, the solder will melt on the iron tip and ‘drip’ onto the component not making a good connection.
I’d never do any soldering without a solder sucker e.g. https://www.amazon.co.uk/Draper-23553-De... but be careful when using it on delicate PCBs as the suck can lift circuit tracks where too much heat has been applied.
Jeff Hi, many thanks for the quick reply. I have already purchased and, following your excellent instructions, fitted an iFixit Macbook Pro battery without any problems. I believe my MBP is of a spec that should serve me for several more years. I think the main problem in extending my MBP’s life seems to be the availability of a replacement battery though, fingers crossed, I may not need one for another couple of years. How long do you think iFixit will be able to offer the mid-2015 MBP replacement batteries? I’d hope to purchase another replacement to keep my MBP going before the battery becomes obsolete.
Hi, can you advise on the shelf life of the iFixit supplied battery? For example, would a battery bought now still be ok to fit in six months, twelve months, or 24 months?