Sega Genesis Cartridge Battery Holder Mod 

Thanks for fixing me up! One of my favorite games of all time.

I wonder if there are some developers who develop cartridges using microcontroller, such as rp2040. Using this chip to increase the data memory capacity, save data and reduce the production cost. I hope the chip with 16mb serial flash memory could help the developers create and produce games easier and cheaper

@Sock Puppet Sounds like it could possibly be a similar issue with the battery having come loose. You're going to need the security bit to open it up to start. A medium duty soldering iron (www.amazon.com/Weller-SP40NUS-Medium-Soldering-Black/dp/B00B3SG6UQ) with the fine point tip should do the trick. The battery holders I grabbed off of eBay. My tip is to be patient, watch a couple of videos on soldering, and make sure that the part is heated before you add solder. With that iron I would heat for about 7-10 seconds depending on the part before applying solder. There are also other options to replacing the battery that don't require the holder. There are some with tabs already on the battery and other people use electrical tape. If you get stuck you're welcome to send it to me and I'll help. Just cover the shipping back & forth. I don't mind helping out the retro gaming community.

hey that tim guy, what tools are you using for the sega genesis cartridge?

Iam going to try your repair technique on NHL 95 for the genesis with a brand new CR 2032 battery thank you for showing your repair jog through much appreciated

I make a slit in a flat erasier so I can reach the top and bottom of the contact pins works great I have opened a few carts after I cleaned them and the erasier cleaned the pins from top to bottom fine

where can these battery holders be bought? I looked for them on Ebay but could find nothing. Thank you for the video!

it would be sweet if we could put a rechargeable battery that would charge when played

These are super cheap to do now. As of this post there is a guy on Ebay from China that sells them in a pack of 10 for $1.23 shipped. If you get 10 or more it drops down to $1.19 each shipped. I just bought 150 of them ($17.10) and now I will go through my collection and just replace all the batteries with these holders for the future. Might as well do them all at once. Battery holders don't effect the value of the title, and some think it a plus. Great video!!!!

I cleaned cartridged but i got a blue stripped screen on my atgames flashbakc genesis. Nba jam tourny edition.

Is there an updated listing on Ebay for the holders? The listing in the comments is gone.

Great video!! Happy I found this. Will make changing battery very easy after the mod

Great video. This battery holder is slim enought to fit in a N64 cartridge?

What would make a game not turn on? I got a cartridge that won’t play at all???

If the battery holder Isn't damaged,Couldn't you just slide the old battery out and the new one in without having to solder anything?

what Battery holder did you use? I picked up some on ebay but they jsut don't quite get the job done. I can NOT get the shell together after they are to high up. Thanks

Is there anyway of swapping the battery out for an EEPROM?

I found better battery holders to use: www.ebay.com/itm/291953521907

Cheap skate route to cleaning old cartridges is q-tips. Hot water on one end and rub like crazy. Then use other dry side to dry. But don't rush to try a NES cartridges to play. They a bit touchy to start up for some games. I know. If it don't work and you bought it used. Keep cleaning it first. I cleaned NES Operation Wolf 5 times before it worked which I bought used off of Ebay. Stay calm and keep cleaning it before getting ready for returns and what not for old cartridges. They have to be cleaned! Most likely they haven't been cleaned in like 10 or 20 + years depending on the game system.

thanks