12/28/2023 0 Comments Optima battery hold down![]() The 17 amps is insufficient to run headlights, ignition and taillights, with occasional stop light usage, so I'm running at a deficit. ![]() I've upgraded the rear lights (separate tail and stop light bulbs, each is single contact) to #1129 single contact for increased visibility at night, so they have a greater electrical draw than factory bulbs. The 19 Pierce 8s have a generator which produces only 25 amps cold, 17 amps hot after the thermal reduction kicks in. I use a pair of Optimas more to compensate for the charging deficit when running at night with the lights on. That said, I do indeed run a pair of Optimas in each of my Pierce 8s which took Group 3 wet cell batteries. I'm assuming many of you have had similar situations with your older cars, what did you do to fix it?Ī second Optima is a rather pricey spacer! How about filling the extra space in the battery box with oil bottles? That's what I do on my Pierce Series 80 with a battery box sized for a Group 2 wet cell. While a normal rectangular battery worked OK in the space, I will need to enclose the Optima in something to keep it from moving around. The battery tray in my car is an open design under the drivers seat made for an older giant sized battery (See photo). These are great batteries but as you may know the 6 volt version is very small, only 10" long by 7" wide by 8" high. Next morning, still charging, not good! Short story the battery is toast so I have ordered a 6 volt Optima. ![]() Left it charge that afternoon and was surprised that it was still charging when I went to bed. I topped off the fluid and hooked it up to my Battery Tender. I pulled the battery out, checked it with a meter which showed 4.5 volts, low but not dead. I checked the battery and found a loose negative cable but after tightening it still would not turn over. I went out to take my Packard for a ride a few days ago and it wouldn't start or turn over. ![]()
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