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electrical:12v:b2b [2019/06/02 16:58]
frater_secessus [Battery to battery chargers] 		electrical:12v:b2b [2019/11/12 12:47]
frater_secessus [limitations]
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   - enough //time// at that voltage for the battery to stop accepting much current.(([[electrical:12v:battery_capacity|C/100]] to C/200))   - enough //time// at that voltage for the battery to stop accepting much current.(([[electrical:12v:battery_capacity|C/100]] to C/200))
  
-DC-DC chargers address the first requirement, but unless you are driving for //hours// the isolator won't have enough time to fully charge the batteries.  DC-DC charging is very effective on cruisers (boats) that run the engines for hours each day.  They will, however, put more current into the bank due to their higher voltage.+DC-DC chargers address the first requirement, but unless you are driving for //hours// the isolator won't have enough time to fully charge the batteries.  DC-DC charging is very effective on cruisers (boats) that run the engines for hours each day. 
 + 
 +**Charger throughput is generally limited** to 20-30A since higher rates would dictate $$$ internal components. This isn't as big a limitation as it might seem, since lead-acid [[electrical:solar:status#in_absorption|current acceptance drops substantially throughout Absorption]]. 
 ===== CTEK D250 series ===== ===== CTEK D250 series =====
  
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 [[https://amzn.to/2SkqVXq|{{https://images-na.ssl-images-amazon.com/images/I/41iC+8sIvJL._AC_US218_.jpg }}]] [[https://amzn.to/2SkqVXq|{{https://images-na.ssl-images-amazon.com/images/I/41iC+8sIvJL._AC_US218_.jpg }}]]
 The Sterling Pro Batt Ultra series is alternator-charging only, but can be configured to exact [[electrical:solar:charge_controller_setpoints|setpoints]]. The BB1260-12 is a 30A example and costs about $50 more than the D250S above.  The Sterling Pro Batt Ultra series is alternator-charging only, but can be configured to exact [[electrical:solar:charge_controller_setpoints|setpoints]]. The BB1260-12 is a 30A example and costs about $50 more than the D250S above. 
 +
 +===== Renogy =====
 +[[https://amzn.to/33HJ8ns|{{ https://images-na.ssl-images-amazon.com/images/I/51Hu4-7NxOL._AC_UL160_SR160,160_.jpg}}]]Renogy makes b2b chargers in [[https://amzn.to/2NGIP6U|20A]] and [[https://amzn.to/33HJ8ns|40A versions]].
 +
 +This charger has preset profiles for battery types.
 +
  
 ===== Redarc ===== ===== Redarc =====
electrical/12v/b2b.txt · Last modified: 2024/04/12 21:52 by frater_secessus

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