{"id":20295,"date":"2017-03-02T21:42:19","date_gmt":"2017-03-02T21:42:19","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=20295"},"modified":"2017-03-02T21:42:19","modified_gmt":"2017-03-02T21:42:19","slug":"auto-batteries-reserve-capacity-vs-ah-amphrs","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/auto-batteries-reserve-capacity-vs-ah-amphrs\/","title":{"rendered":"Auto batteries: reserve capacity vs Ah (Amp*hrs)"},"content":{"rendered":"

The tutor defines two terms relating to auto batteries.<\/h1>\n

The reserve capacity (RC) of a car battery is given in minutes. It’s the duration the battery can discharge 25A at ≥ 10.5V.<\/p>\n

Ampere hours (Ah), on the other hand, is the product of steady discharge in Amps that is possible for a duration of hours before the battery voltage slips below 10.5V. Ah is often given in a format like 50Ah@20h, meaning that, over a 20 hour duration, the battery delivered a steady 2.5A at or above 10.5V.<\/p>\n

Mathematically, reserve capacity can be converted to Ah as follows:<\/p>\n

Ah \u2248 RC*(5\/12)<\/p>\n

However, this equation might be more a “rule-of-thumb”, since the total amount of energy available from a battery decreases with speed of discharge. In other words, a battery that delivers 2.5A for 20h might likely not manage 50A for 1h. <\/p>\n

Source:<\/p>\n

www.pacificpowerbatteries.com<\/a><\/p>\n

all-about-lead-acid-batteries.capnfatz.com<\/a><\/p>\n

Jack of Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"

The tutor defines two terms relating to auto batteries. The reserve capacity (RC) of a car battery is given in minutes. It’s the duration the battery can discharge 25A at ≥ 10.5V. Ampere hours (Ah), on the other hand, is …<\/p>\n

Auto batteries: reserve capacity vs Ah (Amp*hrs)<\/span> Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[188,11,1023,384,181],"tags":[2155,280],"class_list":["post-20295","post","type-post","status-publish","format-standard","hentry","category-autos","category-chemistry","category-electricity","category-energy","category-lifestyle","tag-ampere-hours","tag-car-battery"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/20295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/comments?post=20295"}],"version-history":[{"count":13,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/20295\/revisions"}],"predecessor-version":[{"id":20308,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/20295\/revisions\/20308"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=20295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=20295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=20295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}