http://zeromanual.com/history/Loss_of_Range?feed=atom&Loss of Range - Revision history2024-03-29T08:07:31ZRevision history for this page on the wikiMediaWiki 1.27.0http://zeromanual.com/index.php?title=Loss_of_Range&diff=4816&oldid=prevBrianTRice at 04:06, 12 November 20192019-11-12T04:06:47Z<p></p>
<p><b>New page</b></p><div><onlyinclude><br />
Zero [https://www.zeromotorcycles.com/range/ range] can vary remarkably more than a gasoline-powered vehicle, which takes time to understand.<br />
: Zero range estimates are accurate ''for the conditions stated''.<br />
: First, consult Zero's [https://www.zeromotorcycles.com/range/ Range page] for factors that change real-world range.<br />
<br />
; Related Confirming Symptoms<br />
* [[Power Reduction]] at higher SoC levels.<br />
* Lower range estimates for a given SoC reading, especially near 100%.<br />
<br />
; Potential Causes<br />
* The majority of range loss is due to the effects of cold weather on the battery.<br />
* Internal resistance increases in batteries at low temperatures.<br />
* Rain will exacerbate the problem since thermal transfer will be higher with water contacting the battery case.<br />
* The [[Official_Owners_Manual|official manual]] has a section for Cold Weather specifically calling out that up to 30% of range might be reduced at 30F ambient temperature.<br />
* The effect is roughly linear below (say) 45F ambient temperature.<br />
* The [http://batteryuniversity.com/learn/article/discharging_at_high_and_low_temperatures internal resistance] of the battery is the primary mechanism for reduced performance.<br />
<br />
;Recommendation<br />
: If full range is required at low temperatures, wrap the battery in a suitable insulating material in cold seasons.<br />
: Neoprene at 1/16" thickness has been tested at highway speeds to make a marked difference in battery temperature (but not to an unsafe degree).<br />
:: Cover the front of the battery primarily and the forward halves of the sides.<br />
:: Make sure to securely fasten the neoprene so it will not get caught in the front wheel.<br />
:: Grommeted holes can be used to secure the wrap through the central frame tube and the tank plastics.<br />
:: A thin (3mm or 1/8") sheet above the battery would also help in cold precipitation.<br />
: Masking tape across the front face has also been used effectively.<br />
: {{Warning|Any wrap used to insulate the battery at low temperatures will prevent sufficient cooling for it to operate at normal temperatures. Remove any wrap when operating above 45F.}}<br />
<br />
;Advice/Experience via [http://electricmotorcycleforum.com/boards/index.php?topic=7431.msg62019#msg62019 Zee in Northern Ontario]:<br />
<blockquote><br />
Well this Canuk is a heavy sled (snowmobile) head and lives in northern ontario and owns 2 Zero's 2010MX & 2015FX and rides all year long as long as the roads are clear.<br />
* The bikes are stored in a non heated garage and it takes full battery awareness and charging smarts to keep everything going all winter.<br />
* The temperature inside the garage is usually 10C warmer then outside.<br />
* I automatically plug every bike in after every discharge when the batteries are still warm so the FX is usually fully charged when I start a ride.<br />
* When I decide to go for a ride and it is -20C outside<br />
*# I will first go for a 20% discharge were the bike will run like a lame duck.<br />
*# Then I will put the bike back on charge with extra charger while the batteries are warmed up<br />
*# When the bike is back at full charge then the bike wakes up a bit but still not at full summer power but enough power to tickle my fancy.<br />
I can't wait for battery technology to advance so I can covert my sled (snowmobile).<br />
* Also be aware that the battery will shut down with up to 20% power left if you are pulling steady on it in the cold weather :) cheers<br />
</blockquote><br />
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[[Category:Performance Issue]]</div>BrianTRice