Posted by Geo-TH,In on February 10, 2019 at 06:03:51 from (50.102.28.113):
My new 20v dewalt batteries won't charge if they are cold or too hot.
GM recommends using a charger designed for AGM batteries that keeps the charging voltage under 14.8 v.
My car has set inside a 50 degree garage for past two weeks. Lot of bells and whistles that drains the battery. BTW< GM recommends not using a trickle charger.
Went out of town the other day. Turned the voltmeter on display. Charging voltage went to 14.8 v for about 30 minutes. Then slowly it increase to 15 v as the battery cooled off, 15 degrees outside
We stopped for lunch for about an hour.
On the return trip, 150 miles, the charging rate went to 15.2 volts. So much for keeping charging voltage below 14.8 v on an AGM.
I'm only guessing that the car's computer looks at temperature and adjusts charging voltage.
I connected my battery minder to a cold battery in pole barn. It too has a temperature monitor. Charger didn't want to work in the cold.
Does anyone have a link to show that temperature has an effect on a battery's ability to be charged? I read someplace that booster chargers capable of 200+ amps may cause a COLD battery to fill with hydrogen and go BOOM.
Anyone experience a big bang using a booster chargers on cold batteries? I saw one. Big flash and acid all over. Lucky no one was close to battery at the time.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
