Flyco shaver battery swap — a brand-new shaver gets a bigger battery first, so one charge lasts more than twice as long

A brand-new Flyco shaver gets a bigger battery straight away: one screw and it pops open, the stock 600mAh is swapped for a 1400 cell that tests at 1490mAh, spot-welded back in, foam pad added so it doesn’t rattle — done in a minute

The freshly bought Flyco shaver is fine, but the battery felt short-lived, so it gets opened and re-celled right away. Disassembly is easy: one screw and it pops open; a single cell, stock 600mAh; replaced with a full 1400mAh (written on it, tested at 1493 / 1490mAh). The swap is simple (nickel tab spot-welded, on camera); after fitting, a foam sticker goes on so nothing rattles when shaken — done. Comments: where to buy the welder, how to get it out, is it NiMH; some say Flyco is junk / Philips is ten times better; one person couldn’t charge after the swap.

Outcome

Steps4 steps · click a frame to jump

1. 
   1. New Flyco shaver, battery doesn’t last

   The freshly bought Flyco shaver is fine, but the battery doesn’t last long, so open it up and swap the battery.

   00:01 – 00:11
2. 
   2. One screw and it pops open; 600 → 1400 (tested 1490)

   Easy teardown, one screw and it pops open, a single 600mAh cell; replaced with 1400mAh, tested at 1493 / 1490mAh.

   00:11 – 00:29
3. 
   3. Spot-weld the replacement

   The swap is simple; the nickel tab is spot-welded on (on camera, AWithZ watermark).

   00:29 – 00:53
4. 
   4. Foam pad against rattling, done

   Stick on a foam pad so it doesn’t rattle when shaken; done.

   00:53 – 00:59

Bill of materials

Measured on camera

Creator’s tips

• Write the measured capacity on the cell for easy reference 00:20
• A foam pad stops the battery rattling when shaken 00:53

Pitfalls

• Comment: someone couldn’t charge after the swap

Li-ion safety

Quotes