Hotdog Posted November 29, 2009 Report Share Posted November 29, 2009 I recently purchased a DieHard 2/40/200 amp Manual Battery Charger from sears Link just to have on hand and to charge batteries when needed. My question is... Since I have a stock battery up front and two AGM batteries in the back. 1. Do I just connect the charger normally to the front battery? 2. Will it charge all three batteries just being connected to the front battery? I am thinking yes but asking because I am not 100% sure Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
brewer_brewer Posted November 29, 2009 Report Share Posted November 29, 2009 are you wanting to just hook this up to your car overnight to keep a good charge on them? Quote REFS http://www.caraudioclassifieds.org/forum/itrader.php?u=2026 http://www.stevemeadedesigns.com/board/topic/44535-official-brewer-brewer-feedback/page__p__625998__hl__brewer__fromsearch__1entry625998 "you're not allowing natural selection to work, you're like the guy that invented the seatbelt" Link to comment Share on other sites More sharing options...
Hotdog Posted November 29, 2009 Author Report Share Posted November 29, 2009 (edited) are you wanting to just hook this up to your car overnight to keep a good charge on them? Yes.. I would be using the 40amp charge I would think Edited November 29, 2009 by Hotdog Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
mike fallon Posted November 29, 2009 Report Share Posted November 29, 2009 40 amps overnight might be a little bit much. You could start out at 40 then drop to 2 might work better. AGM and lead acid have different charging profiles so if you charge the bank then one type will not get charged optimally. Quote Link to comment Share on other sites More sharing options...
Hotdog Posted November 29, 2009 Author Report Share Posted November 29, 2009 40 amps overnight might be a little bit much. You could start out at 40 then drop to 2 might work better.AGM and lead acid have different charging profiles so if you charge the bank then one type will not get charged optimally. I think the manual said that 40amp was a 3 hour charge for one battery. So I was thinking if it were charging 3 batteries it would take 3 times as long... so 9 hours? or would it still charge all 3 batteries at the 3 hour charge time? Would it be better to hook the charger up to the the AGM battery for charging or does it make a difference on what battery I put the charger on? Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
n8ball2013 Posted November 29, 2009 Report Share Posted November 29, 2009 i wouldn't mix the two type of batteries. Thats just me. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
scottiej Posted November 29, 2009 Report Share Posted November 29, 2009 I recently purchased a DieHard 2/40/200 amp Manual Battery Charger from sears Link just to have on hand and to charge batteries when needed. My question is... Since I have a stock battery up front and two AGM batteries in the back. 1. Do I just connect the charger normally to the front battery? 2. Will it charge all three batteries just being connected to the front battery? I am thinking yes but asking because I am not 100% sure Chargers like this are not made to charge AGM batteries. If you will be using this to charge AGM batteries you will need to monitor the voltage and time on charge very carefully. Allowing the voltage to reach 14.5-15V+ will begin to overcharge your AGM's and will reduce their lifespan. I would recommend only using the 2A charge, and leaving a dmm connected at all times so you can monitor what the charger is doing. Quote XS POWER Batteries, Chargers & Accessories 888-4XS-POWER Link to comment Share on other sites More sharing options...
Hotdog Posted November 29, 2009 Author Report Share Posted November 29, 2009 (edited) OK.. I had the charger on the front Bat for 7 hours at 40amp charge. Then pulled the charger off. got the dimm out and tested all three batteries Front battery which was a wet cell battery = `12.8 at rest and 14.59 at idle Both AGM batteries were 12.8 at rest and 14.5 at idle Edited November 29, 2009 by Hotdog Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Hotdog Posted November 30, 2009 Author Report Share Posted November 30, 2009 What is the main difference between a charger made for charging wet cell batteries and a charger that is made to charge AGM batteries? Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
kentb Posted November 30, 2009 Report Share Posted November 30, 2009 my suggestion would be to just return that charger and get yourself a fully automatic charger that is made for AGM batteries. Quote New System 2 10" Fi SSD, Sundown 1500d Build I build and design enclosures(cheap price), PM ME Kicker L7 Navigator(plexiglass, fiberglass, aeroport) Build BTL 18" Escalade(plexiglass, battery tray) Build http://www.kentbaudio.com Old System Link to comment Share on other sites More sharing options...
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