Reddit reviews Monster Brain

Take the cart apart and pop it into the gameboy and turn it on. If the cart has power, you can swap out the battery. Make SURE it is connected proper, then save the game and turn off the cart. If you are careful, your save will be ok. Afterward, pop it out and put the cover back on. I've had to do this with quite a few, it's pretty easy!

You'll either need a CR2025 or a CR2016 watch battery. You can also hunt down something like a MonsterBrain to dump the data then replace and re-load it back to the cart, though I haven't used that thing since I was a kid.

I don't mean to divert attention/potential buyers away from BennVenn and what he does for this community, but alternatively to the Mega Memory Card (which btw, sometimes saves are randomly deleted entirely), you can use a Monster Brain for pretty much the same effect. Backs up game saves permanently but it can also edit/hack Pokemon games right on the thing itself, and has the ability to colorize older Gameboy games to your liking. Plus, it's much cheaper than any price I've found a Mega Memory Card for.

Again, I don't mean to insult BennVenn nor hurt his business, just providing another product that does essentially the same effect as a Mega Memory Card.

I use one of these

Mega Memory Card - https://www.amazon.com/Mega-Memory-Card/dp/B00002R108

there kind of expensive because there used in the chiptune scene, and by pokemon players

another option is the Monster Brain - https://www.amazon.com/gp/product/B000056HGE

seems to have solid reviews!

The cheapest option, without actually backing up, would probably be a Monster Brain ($13 on Amazon). You can use it to hold your save, change the battery, and then immediately restore the save - or do the even cheaper method of replacing it while the game is on. After that, I'd recommend BennVenn's Joey.

I made a guide with all sorts of devices/methods with links and videos included right here, but the cheapest options were already mentioned.

It really depends on the battery you replace it with.

I think the standard cr2016/cr1620's should give you around 10 years, the larger cr 2032's will give you like 15 or so.

These are really rough estimates, I don't remember the source, they may be a bit off.

But no matter the size, as long as you use a good quality replacement they should last you quite some time, IF you want non-battery-backed backups to keep the pokemon longer, just pick up this

You can make multiple backups of your save file on non-volatile memory, and it's only around $10-$15

There's also this, it was like a game genie but for pokemon only: http://www.amazon.com/Monster-Brain-game-boy-color/dp/B000056HGE/ref=sr_1_2?ie=UTF8&qid=1411353546&sr=8-2&keywords=monster+brain+gameboy

http://www.ebay.com/itm/Brand-New-Game-Boy-Monster-Brain-by-Pelican-Pocket-Color-Advance-SP-/161124038282?pt=US_Video_Game_Cables_Adapters&hash=item2583bdb68a

Had a bunch of stuff you could do, and it allowed you to make multiple saves. I had one of these as a kid.

It's been a while though, so please research it to make sure it does what you need for the cartridges you need it for before you buy one if you decide to.

Which is why, if anyone has even the most basic soldering skills needs to replace those batteries (while using a secondary batter to keep the save intact) before they die completely. That or pickup something like a Monster Brain and use it to backup your saves.

http://www.amazon.com/Monster-Brain-game-boy-color/dp/B000056HGE

Might be what you were thinking of. : ]

I just got mine yesterday... $10 aint bad

Monster Brain https://www.amazon.com/dp/B000056HGE/ref=cm_sw_r_other_awd_X308wbHV5BG9A

I'm sooooo jealous. I lent a friend of mine my Pokemons Yellow, Silver and Crystal, my Monster Brain and my shiny Gold and Silver Special Edition Gameboy Color. I never got them back. I've asked about them multiple times and she,"Doesn't have them. They're not in any of her boxes." >: (