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Old 01-24-2017, 02:00 PM   #72 (permalink)
EcoModding Lurker
Join Date: Dec 2016
Location: Romania
Posts: 26

Simba - '05 Seat Leon FR
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Thanked 16 Times in 9 Posts
120 kms (75 miles) of road tests with new capacitor-battery combo (Varta 12Ah AGM, thicker copper strips between supercaps, no balancing boards) over 2 days and 2 nights.

Temperatures: -2 to 5C (28-41F) day, -6 to -7C (19-21F) night.

Voltage: 13-13.1 volts just after full charge. Drops to ~12.83 volts after 24 hours. Stays at ~12.6-12.8 volts through the day, multiple starts and drives.

Alternator voltage: 14.6-14.8 volts engine cold just after start. 14.3-14.4 volts engine warm, headlights off. 14.0-14.1 volts engine hot, headlights on, after hours of driving.

Start: 1-2 seconds of cranking. Voltage drops very briefly below 9 volts during cranking.

Rpms climb a little bit faster. Smoother running under load and high rpm.

Effects on roadholding: sharper turn-in on corner entrance, enough to trigger the ESP on dry tarmac with summer tires. (This is due to all bits and pieces moved to change the weight distribution, 36-42 kg overall, not just lighter battery.) Slightly smoother acceleration in gear.

Can be charged by the solar panels over the trunk lid.

Last edited by Nautilus; 01-24-2017 at 02:22 PM..
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