| Arcade Collecting > Restorations & repair |
| 3.6v Tadiran Lithium Inorganic AA Battery |
| << < (4/10) > >> |
| pbj:
Yes, dude, your 37 year old battery is dead. Be thankful, very thankful, they used a type that didn't leak all over your boards. Cut that thing off and solder on a new one. :cheers: |
| PL1:
--- Quote from: spisi on August 24, 2022, 04:22:56 pm ---OK, tested it with a multimeter and got a whopping 0.00! --- End quote --- Yeah, that'll cause memory loss. :lol --- Quote from: spisi on August 24, 2022, 04:22:56 pm ---This type of battery tests the same as a regular AA battery I assume? I tested a Duracell AA and got a reading of 2.05. --- End quote --- A Lithium-ion AA battery is not the same as a regular alkaline AA battery -- same physical size, different voltage, different storage capacity. (mA hours) - An alkaline AA produces a nominal 1.5v. - A Li-ion AA produces a nominal 3.6-3.7v. https://en.wikipedia.org/wiki/AA_battery#Comparison --- Quote from: spisi on August 24, 2022, 04:22:56 pm ---So, I guess I could leave the old battery in place and solder a new second battery in the B2 area and see what happens. --- End quote --- Heed PBJ's wisdom. Nothing good can come from a "keep the dead old battery in parallel with a good new battery" approach. 1. Out with the dead old battery. 2. In with the good new battery. 3. Clear the stats to be sure that the memory doesn't have any random garbage. 4. Play some and see if it's saving your stats. :cheers: Scott |
| spisi:
--- Quote from: pbj on August 24, 2022, 04:30:04 pm ---Yes, dude, your 37 year old battery is dead. Be thankful, very thankful, they used a type that didn't leak all over your boards. Cut that thing off and solder on a new one. :cheers: --- End quote --- ;D |
| spisi:
--- Quote from: PL1 on August 24, 2022, 06:29:20 pm --- --- Quote from: spisi on August 24, 2022, 04:22:56 pm ---OK, tested it with a multimeter and got a whopping 0.00! --- End quote --- Yeah, that'll cause memory loss. :lol --- Quote from: spisi on August 24, 2022, 04:22:56 pm ---This type of battery tests the same as a regular AA battery I assume? I tested a Duracell AA and got a reading of 2.05. --- End quote --- A Lithium-ion AA battery is not the same as a regular alkaline AA battery -- same physical size, different voltage, different storage capacity. (mA hours) - An alkaline AA produces a nominal 1.5v. - A Li-ion AA produces a nominal 3.6-3.7v. https://en.wikipedia.org/wiki/AA_battery#Comparison --- Quote from: spisi on August 24, 2022, 04:22:56 pm ---So, I guess I could leave the old battery in place and solder a new second battery in the B2 area and see what happens. --- End quote --- Heed PBJ's wisdom. Nothing good can come from a "keep the dead old battery in parallel with a good new battery" approach. 1. Out with the dead old battery. 2. In with the good new battery. 3. Clear the stats to be sure that the memory doesn't have any random garbage. 4. Play some and see if it's saving your stats. :cheers: Scott --- End quote --- OK OK, sounds like a plan! I'll keep you guys posted. I'm going to definitely have to remove the board. I don't want to break anything (fingers crossed) |
| spisi:
So I was looking on ebay (gathering info on other similar boards) and saw this...Looks like another battery underneath the top board... :banghead: Does it say -20% on it??? |
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