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electrical:12v:b2b [2019/06/02 13:58]
frater_secessus [Battery to battery chargers]
electrical:12v:b2b [2019/11/12 09:48] (current)
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 chargers were first marketed for cruisers (boats) ​since they 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.1559509133.txt.gz · Last modified: 2019/06/02 13:58 by frater_secessus