Difference between revisions of "Battery Testing 04-2019"
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All team batteries were tested in April, 2019. Between MAR Championship and FRC Championship (Detroit version). | All team batteries were tested in April, 2019. Between MAR Championship and FRC Championship (Detroit version). | ||
| − | + | A strange phenomenon was observed during this testing: many batteries exhibited high internal resistance (>0.025 Ω - Fair rating) during Battery Beak testing during the first scan while also appearing to be good batteries during CBA testing. Follow-up Battery Beak testing showed recovery of most of these batteries after discharge & recharge. It is hypothesized that this is the result of a breakdown in battery management, specifically many batteries have been left for long periods uncharged after use. In addition, team habit during drive practice is to run the battery down to the point where operating difficulties become apparent. | |
| − | All | + | The battery becoming Red (AK) was removed from service. All leads were removed and battery recycled. |
| − | Batteries rated Blue are for competition. The team has (18) competition-rated batteries. | + | All batteries rated Yellow will be used for testing, practice, and scouting only. Not competition. |
| + | |||
| + | Batteries rated Blue are for competition. The team has (18) competition-rated batteries, including (6) new batteries purchased during this testing (the strange phenomenon cited above influenced this purchase decision). | ||
[[media:Battery_Test_190413-19.pdf | Battery test report]] | [[media:Battery_Test_190413-19.pdf | Battery test report]] | ||
Revision as of 12:30, 20 April 2019
All team batteries were tested in April, 2019. Between MAR Championship and FRC Championship (Detroit version).
A strange phenomenon was observed during this testing: many batteries exhibited high internal resistance (>0.025 Ω - Fair rating) during Battery Beak testing during the first scan while also appearing to be good batteries during CBA testing. Follow-up Battery Beak testing showed recovery of most of these batteries after discharge & recharge. It is hypothesized that this is the result of a breakdown in battery management, specifically many batteries have been left for long periods uncharged after use. In addition, team habit during drive practice is to run the battery down to the point where operating difficulties become apparent.
The battery becoming Red (AK) was removed from service. All leads were removed and battery recycled.
All batteries rated Yellow will be used for testing, practice, and scouting only. Not competition.
Batteries rated Blue are for competition. The team has (18) competition-rated batteries, including (6) new batteries purchased during this testing (the strange phenomenon cited above influenced this purchase decision).
