Battery Life / Charger for Connected E3

Hey friends, long time listener, first time caller here.

I'm curious what others are experience with their E3 for battery life, and if there are alternative (generic) charges for it as well. I had an E1 watch that would last maybe 8 or so hours (I realize it's 8 years old) and I'm struggling to get the advertised 20 hours on my E3 (also realize it's 3-4 years old).

I really wish I was more impressed w/ the auto-brightness feature of my E3, as I hate having to adjust it going from inside to outside...but I suppose i'm only doing that to try and maximize battery life. I've tried turning it on low power mode which seems to help, but after leaving for the office at 7am, and getting home at 5pm, the watch is nearly almost dead every time and onto the charger it goes. If I'm going out straight after work, I can be sure it's going to be dead before I wind back up at home. Does anyone have any good solutions or hacks to help with this?

I suppose the next option, would be to have an additional charger at the office to charge it before I went out for the evening. I wasn't sure if there were any generic watch chargers that would work with the E3, before dropping $100 on an original. There seem to be some cheaper ones on amazon, just not sure if it's the correct pinout or sizing.

Any help would be appreciated, and thanks in advance for any advice!

I cannot even get an additional charger now to replace the one that stopped working for me. Just goes to how I have lost confidence in TAG. I have loved them for 30 years and they blew most of this after spedning $2000+ on watch that then took months to get customer service to figure out why it would not connect to bluetooth, then I only got around 10 hours charge and now my charger won't charge the phone. 4 years and I have only been able to use the watch for literally <6 months during that time. SO DISAPPOINTED. I am not wealthy and put aside months for two years to afford.

@glenn54509 if you can’t find a new charger for your E3 through your AD, you could try one from this company. They make chargers for all four generations:
https://www.cymruchargers.com/tag

I cannot understand why TAG Heuer no longer sells replacement chargers for a smartwatch that was launched in 2020 and has been selling until very recently. It seems that they apply a “use and throw away” philosophy with their smartwatches (especially since 2020 when they shifted production from Switzerland to China), compared to the after-sales service they have for traditional watches. It is a shame, because spending so much money on a smartwatch and finding it unattended and without the possibility of buying its accessories as soon as the next generation appears is not the service that customers expect from this brand or from a smartwatch of this price.