Autopsy results on dead 510 Battery.
TOD: Unknown. Approximately Under one day of use
Cause of death: Multiple failures: Primary cause of death- Failed battery others include: failed switch and switch chipset failure.
Repairable: No
Battery- Test Read at .03 DCV. Further dissection of the battery reviled heavy crystallization. Battery would not hold a charge. Possible cause: Complete discharge during shipping due to faulty switch and battery protection chip failure.
Switch- The switch is a diaphragm wafer, always closed, momentary switch. This type of switch is known to be unreliable and prone to intermittent contact points during operation.
Chipset- As mentioned above, the charging/discharging protection circuit failed. Also the NAND gate that controls the power to the Atomizer has appeared to fail.
Other notes/recommendations: Replacement of another style of diaphragm switch is required. My recommendation is a point contact switch with either a magnetic return or a light spring return. The battery issue can be resolved by installing an on-battery protection circuit and changing the battery supplier/grade used. A thinner battery encasing is also recommended for increased battery life.
Autopsy performed by: Devon Schmoker on 2/23/09
I would also like to give a special thanks to Rob from Altsmoke.com for supplying the battery cadaver for this Autopsy.
Here is an image of the breakdown of the switch. I lost a screen that should be between part 4 and 5. It literally looks like a tiny screen. There should be 8 parts and there is only 7. (I lost it and I cant find it. I am blaming my tooth extraction today for this one. I had to take it apart while laying in bed.)
TOD: Unknown. Approximately Under one day of use
Cause of death: Multiple failures: Primary cause of death- Failed battery others include: failed switch and switch chipset failure.
Repairable: No
Battery- Test Read at .03 DCV. Further dissection of the battery reviled heavy crystallization. Battery would not hold a charge. Possible cause: Complete discharge during shipping due to faulty switch and battery protection chip failure.
Switch- The switch is a diaphragm wafer, always closed, momentary switch. This type of switch is known to be unreliable and prone to intermittent contact points during operation.
Chipset- As mentioned above, the charging/discharging protection circuit failed. Also the NAND gate that controls the power to the Atomizer has appeared to fail.
Other notes/recommendations: Replacement of another style of diaphragm switch is required. My recommendation is a point contact switch with either a magnetic return or a light spring return. The battery issue can be resolved by installing an on-battery protection circuit and changing the battery supplier/grade used. A thinner battery encasing is also recommended for increased battery life.
Autopsy performed by: Devon Schmoker on 2/23/09
I would also like to give a special thanks to Rob from Altsmoke.com for supplying the battery cadaver for this Autopsy.

Here is an image of the breakdown of the switch. I lost a screen that should be between part 4 and 5. It literally looks like a tiny screen. There should be 8 parts and there is only 7. (I lost it and I cant find it. I am blaming my tooth extraction today for this one. I had to take it apart while laying in bed.)

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