Yesterday I Upgradesy battery to the 81 watt hour battery and while I was in there I taking things apart, in also installed a set of HandheldDIY Joysticks. Here are my overall impressions before I get into installation l, etc.

81wh Battery: First and foremost, I LOVE THIS! I play all my games on medium settings at 25ws and I doubled my battery life with one upgrade. Grant it, it takes longer to charge the battery but for double the battery life it is worth it, IMO. I didn't have to cut any of the brackets like other mods in the past, just carefully unplug some of wires, remove the SSD, and remove the three pads under the OEM bracket. There is a guy who makes an amazing video on how to do it. 

https://youtu.be/AnXVU2PitbY?si=oW0yGb159IZW1hOR

Overall, on the difficulty level 1 being Easy and 10 being hard, I would say 5 Average. I give it a five because you have to move small, delicate wires and put them all back. If you are a cave man that likes to yank and pull and break one of these small wires, you won't have wifi or speakers or something will not work. 

Battery Mod Pro Tip: 
1. Use s microfiber cloth to avoid scraching up your screen. 

2. I read some post about people attempting to remove the twi battery adhesive strips and having issues where they tried alcohol or went out there with tools and burned up their Go. The trick is REMOVE THE SSD and to pull the tabs horizontally and GO SLOW WITH TWO HANDS WITH EQUAL AND EVEN FORCE!! Where i think people make a mistake is they start pulling the tabs and then want to go vertical or they pull the tabs and move at a diagonal and both are recipes for disaster.  Using two hands with even pressure, going slowly, and pulling the tabs horizontally ensures you won't snap the adhesive tabs while you are pulling them out. Just take your time. 

3. Also, unplug the battery and don't use anything sharp or metal around batteries in order to avoid battery punctures, getting shocked, etc. A dull, plastic, spudger is your friend. 

HANDHELDDIY JOYSTICKS: This mod is a PIA; however, if you patience and right tools (the kit comes with a screw driver and plastic tweezers; however, a spudger is your friend for this one) it's manageable. This is a mod you have to schedule some time for and not rush. If your an experienced tinkerer maybe an 45mins or hour for both sticks. If your a noob, a hour plus. Most people complain about the right joycon because of all the extra parts ie scroll wheel, mouse sensor, etc.; however, I found it easier than the left joystick because I learned A LOT of hard lesson on the left stick first. Nonetheless, once both sticks were put back together and calibrated, it was a day and night difference. If you are a FPS player, you will notice tighter movements with your shooting and moving. It takes all the slop out of the oem sticks. I'm more of a souls like, action RPG player and ohhh man this mod is AMAZING. In a game like Sekiro where movement is critical to the art of "Gettin Gud" having tighter controls just makes the moves tighter. They will force you to get better. I would highly recommend these joysticks!! The install level I would give it an 8 or a 9 because of all the ribbon cables you have to take apart and put back. If you break a ribbon cable, you are are going to need a new Joystick. 

Protip for HandheldDIY Joysticks:

1. If you endeavor to try this mod watch, go to YouTube and watch this video multiple times. 

https://youtu.be/EuAnPpo9FeE?si=PgRsYyAWdjYULF_X

2. Use a microfiber cloth and place the controller face down will you work on it. 

3. Have something to organize your screws. I believe there are three different types of screws that all look similar, take your time and be organized with your screws. 

4. Be VERY careful with these ribbon cables. 

Overall, I have not had my battery overheat or explode in my hands. I would say its safe. The battery and joysticks were very well made. This isn't like someone is putting these things together in their mother's basement and packaged well. 

Legion Go 81wh and Handheld DIY Joystick Upgrades... Let's talk about it