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electrical:12v:b2b [2019/06/02 16:58] frater_secessus [Battery to battery chargers] |
electrical:12v:b2b [2019/11/12 12:48] frater_secessus [limitations] |
- 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)) |
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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. |
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| **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. |
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| ===== 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]]. |
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| This charger has preset profiles for battery types. |
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===== Redarc ===== | ===== Redarc ===== |