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pascoprius, when you charged the battery, what kind of charger did you use and what settings did you use? If the battery can hold voltage when...
We do not recommend exceeding 10 amps when charging our batteries with a charger, although in a maintenance (float) charging mode, amperage is...
Gordon, I apologize for the delay in responding. We recommend a maximum of 10 amps for up to two hours, which should get the battery close to...
Gordon, please keep me updated on your findings. Thanks! Jim McIlvaine eCare Manager, OPTIMA Batteries, Inc. www.pinterest.com/optimabatteries
Hi Gordon, have you attempted to charge your friend's Optima with a battery charger yet? If you haven't been able to get a charger, many auto...
Gordon, That is absolutely a valid measurement and probably the most accurate way to determine battery voltage (versus reading a dashboard...
Hi Gordon, I'm sorry to hear about the problem you had with your friend's battery. Have you attempted to charge this battery? If so (or if not)...
sorka, I'm sorry to hear your shipper did not transport the battery as indicated by the instructions on the box. However, as others have...
Without knowing how much power various Prius accessories draw or even what other owners see in terms of voltage drops with various accessories on,...
Hi Daniel, before replacing your battery, I would encourage you to fully-charge and disconnect it from your vehicle for about 12-24 hours. (Most...
Hi sub3marathonman, Optima Group 51s available in the USA and manufactured before late-September/early-October of 2011 have SAE posts and two...
I don't know what changes were made to the cables and wiring harness, but using our Prius-specific YellowTop should not cause any issues with a...
Hi Chuck, As others have mentioned, the most-accurate voltage reading will come directly from the battery. I can't speak for what the load of...
fintonissimo, as you can see from this graph, there is a slight increase in reserve capacity in the first 20 or so cycles of our batteries'...
Tom, you are correct that temperature can have an impact on battery performance, which is why I always make a point of posting ranges instead of...
Chuck, I probably don't have as comprehensive an understanding of the Prius charging system as many of the folks on this site do, but it does seem...
Chuck, if your battery is measuring between 11.8 and 12.1 volts, it is about 60-70% discharged. Your charging system voltage looks good and may...
Britprius, unfortunately, I don't have any pricing information on our batteries, either in the States or abroad. If you are looking to pay more...
Red09, as your YellowTop cycles a few more times, the maximum voltage may increase, but please be sure to let me know if you have issues with this...
Red09, if I'm understanding you correctly, the voltage read 12.8 volts off the charger, but would lose voltage when you when you were taking the...
