MetroMPG's battery pack analysis, 2000 Honda Insight
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2000 Honda Insight, 5-speed, 269k km / 167k miles: IMA warning light & P1449 error code set around autumn 2010, then car sat unused from ~Dec 2010 - Jul 2011
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Discussion of this project in the EcoModder forum:Analyzing (refurbishing/repairing) a dead hybrid battery pack (2000 Honda Insight)
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Super Brain settings: 7A charge, 5mV per cell peak detection; 10A discharge, 0.9V per cell cutoff; 20 minute cool/rest between each charge/discharge
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(Note to self: Super Brain voltage reads ~0.1 v below my digital multimeter)
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Starting Jan. 7, 2012Initial VoltageInitial Discharge capacity (mAh)Charge 1 capacity (mAh)Dischg 2Charge 2Dischg 3Charge 3Dischg 4Charge 4Dischg 5Charge 5Dischg 6Charge 6Dischg 7Charge 7Dischg 8Charge 8Rank, based on discharge capacityDate/time of last chargeSelf- discharge (mAh), over 24hSelf-discharge (24h) as % of max. discharge capacitySelf- discharge (mAh), over 7 daysSelf-discharge (7d) as % of max. discharge capacityInternal resistance comparison (voltage drop from 9.9 A discharge current): 2 tests, #1 within 24h of full charge; #2 Jan 25thFinal recharge, mAh, Sat Feb 4Final recharge, peak voltage
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Subpack #17.21939513501lostlostlost6419694164427024644270305Jan 8, 14:001,04716.25%160724.95%1.71.64lostlost
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Subpack #27.6740642473783540952286496591968856189696665447021667369982Jan 9, 12:0095314.28%132719.89%1.811.811461lost
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Subpack #37.13176638619171756623731066977310671473001Jan 9, 09:0099014.75%139220.73%1.811.7620929.14
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Subpack #47.092051594661629257906880591970226208715563227218642770966Jan 10, 12:00107016.65%171226.64%1.81.6522549.02
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Subpack #57.79115954273933571251196081513961875208626452756221540264075070620116Jan 10, 14:00111720.68%154428.58%1.831.7917529.26
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Subpack #67.3276064478963545567715263737064658071413Jan 9, 21:0096814.71%134220.40%1.811.7620049.03
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Subpack #77.599633972575429742885556505159895308603654026046552862735686626110Jan 11, 12:00104918.45%121121.30%1.851.7214779.16
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Subpack #87.6196516843455672540764495841654159056538605665757Jan 12, 11:00100116.53%128921.28%1.931.7316749.09
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Subpack #97.381754274272600954626241562463095696628957146340558261939Jan 12, 10:00101817.82%147125.74%1.91.8318839.15
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Subpack #107.5117433036155652519565625656640557986429582363848Jan 12, 21:00105418.10%143024.56%1.91.7618808.99
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Subpack #117.2794505400458755659682562586863657671694Jan 13, 13:0098414.96%146022.20%1.811.7418009.14
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Subpack #127.72493485835995261465755554857560149335628496556464979562018Jan 13, 08:00106921.47%136927.50%1.81.7316659.09
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Subpack #137.7190460305172lost5414610652986004544960555392598914Jan 13, 16:0097317.86%108519.91%1.771.8616359.16
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Subpack #147.758444594403252355018576053625955552060815617611811Jan 13, 20:00120021.36%128522.88%1.781.7515439.09
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Subpack #157.732848lost45706264550461545496lost13Jan 13, 17:00127923.24%132224.02%1.941.8119579.09
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Subpack #167.5457552545785741528360355437607715Jan 14, 22:00104819.28%146426.93%1.931.6719358.99
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Subpack #177.2562419180829883014455745076127560464135495605912Jan 15, 10:0096317.18%138224.66%1.881.8317369.13
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Subpack #187.14640733353600047575961518758644927553051815806500357694889573117Jan 17, 08:0099519.18%112121.61%1.831.7717259.09
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Subpack #197.466244218792766278636573576466543655349487656694879575319Jan 16, 11:00115023.57%111022.75%1.71.7817729.12
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Subpack #207.652382488233631773152425541405189482756694873562420Jan 17, 10:00101020.73%126826.02%1.921.7920119.06
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1,04718.35%Average1.841.76Average
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Battery pack layout & subpack discharge capacity, as seen from right side (junction board = left side)1,03217.98%Median0.070.06Standard deviation
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Average discharge capacity by row (mAh)1,36023.63%Average
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empty6442667367146427540265806,3731,35623.45%Median
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54494979657658235714605656866,089
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56175504543756045187487948735,527
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Highest capacity ............. Lowest capacityAverage/Median stick discharge capacity:
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5781.1avg5651.5median
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raw data
chart of init vs. best discharge capacity