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electrical:12v:b2b [2020/07/04 13:23]
frater_secessus [CTEK D250 series] |
electrical:12v:b2b [2020/08/15 15:03]
frater_secessus [Renogy] |
| The most common b2b charger with 'dwellers is the D250 series, all of which are 20A smart chargers with integrated MPPT: | The most common b2b charger with 'dwellers is the D250 series, all of which are 20A smart chargers with integrated MPPT: |
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| * D250 (pre-2018, discontinued) - the original, Vabs == 14.4v. | * D250 (pre-2018, discontinued) - the original, Vabs == 14.4v, Vfloat == 13.6v. |
| * [[https://amzn.to/2RY2GNQ|CTEK D250SA]], a 20A solar/alt controller. Vabs selectable 14.4v and 14.7v. Added support for smart alternators. | * [[https://amzn.to/2RY2GNQ|CTEK D250SA]], a 20A solar/alt controller. Vabs selectable 14.4v and 14.7v. Vfloat 13.6v. Added support for smart alternators. |
| * [https://amzn.to/2VNkfou|D250SE]] and [[https://amzn.to/2Aw56As|Smartpass 120S]] which have lithium settings. | * [[https://amzn.to/2VNkfou|D250SE]] which has 14.2 Vabs and 13.3 Vfloat for lithium settings. |
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| House and starter batteries are combined when the starter battery holds >13.1v for 5 seconds.((https://www.ctek.com/storage/C1493FC8638168601722950C8151FF6A802476C93EC460B3BC5323C8A7951C71/9fde706a812c451ebc7257ab76e05cdb/pdf/media/ac7a2dfdc9104b30939287bdb76b81fb/D250SA-manual-low-UK-EN.pdf)) The batteries are isolated when the starter battery is "<12.8V, for 10 sec... or service battery voltage > starter battery voltage". | House and starter batteries are combined when the starter battery holds >13.1v for 5 seconds.((https://www.ctek.com/storage/C1493FC8638168601722950C8151FF6A802476C93EC460B3BC5323C8A7951C71/9fde706a812c451ebc7257ab76e05cdb/pdf/media/ac7a2dfdc9104b30939287bdb76b81fb/D250SA-manual-low-UK-EN.pdf)) The batteries are isolated when the starter battery is "<12.8V, for 10 sec... or service battery voltage > starter battery voltage". |
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| The [[https://amzn.to/2TozjWu|SmartPass accessory]] adds 80A of alternator-voltage charging when Vbatt is low enough that the alternator can still charge it directly. This combined charging((up to 100A)) will happen in the first half of Bulk mode. As house battery voltage rises to normal alternator voltage the smartpass can no longer contribute. At that point the 20A D250SA continues voltage-boosted charging to Absorption voltage.((https://www.4x4community.co.za/forum/showthread.php/292297-Ctek-250-upgrade-to-smartpass?p=3823781#post3823781))\\ | The [[https://amzn.to/2TozjWu|SmartPass accessory]] adds 80A-120A (see below) of alternator-voltage charging to the D250's output when Vbatt is low enough that the alternator can still charge it directly. This combined charging((up to 100A)) will happen in the first half of Bulk mode. As house battery voltage rises to normal alternator voltage the smartpass can no longer contribute. At that point the 20A D250SA continues voltage-boosted charging to Absorption voltage.((https://www.4x4community.co.za/forum/showthread.php/292297-Ctek-250-upgrade-to-smartpass?p=3823781#post3823781))\\ |
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| | * Smartpass 80 - original model. 80A + 20A = 100A. |
| | * [[https://amzn.to/2YZuIPG|Smartpass 120]]. 120A + 20A = 140A. |
| | * [[https://amzn.to/3e156pA|SmartPass 120S]] as above, but with support for smart alternators. |
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| Note: the CTEK D250SA((and the pre-2018 D250**S** model)) panel voltage (Vpanel) maximum is 23v.((https://www.ctek.com/storage/ma/b21ecd5d5e5943a995474cf36d586451/956c3913c8cc4319bb4e47baea0c6d82/pdf/A78BBB08A9DF8976DB79E21271E091489ACEF47A/D250SA-manual-UK-EN.pdf, pdf)) There are user reports that the unit is repairable after overvoltage or polarity damage.((https://www.4x4community.co.za/forum/showthread.php/322874-CTEK-D250S-Problem?s=a2bc518379e50466c9ec523e8b114053&p=4270868#post4270868)),((https://expeditionportal.com/forum/threads/dual-battery-system-with-ctek-d250-not-charging-battery-over-12-volts.174927/post-2416300)) | Note: the CTEK D250SA((and the pre-2018 D250**S** model)) panel voltage (Vpanel) maximum is 23v.((https://www.ctek.com/storage/ma/b21ecd5d5e5943a995474cf36d586451/956c3913c8cc4319bb4e47baea0c6d82/pdf/A78BBB08A9DF8976DB79E21271E091489ACEF47A/D250SA-manual-UK-EN.pdf, pdf)) There are user reports that the unit is repairable after overvoltage or polarity damage.((https://www.4x4community.co.za/forum/showthread.php/322874-CTEK-D250S-Problem?s=a2bc518379e50466c9ec523e8b114053&p=4270868#post4270868)),((https://expeditionportal.com/forum/threads/dual-battery-system-with-ctek-d250-not-charging-battery-over-12-volts.174927/post-2416300)) |
| Note: polycrystalline panels may be more useful here, as their Voc should be a bit lower than mono. | Note: polycrystalline panels may be more useful here, as their Voc should be a bit lower than mono. |
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| > The D250SA trickle charges the starter battery from a solar panel at intervals of 3 seconds if the service battery is fully charged.((https://www.ctek.com/storage/C1493FC8638168601722950C8151FF6A802476C93EC460B3BC5323C8A7951C71/9fde706a812c451ebc7257ab76e05cdb/pdf/media/ac7a2dfdc9104b30939287bdb76b81fb/D250SA-manual-low-UK-EN.pdf)) | > The D250-series trickle charges the starter battery from a solar panel at intervals of 3 seconds if the service battery is fully charged.((https://www.ctek.com/storage/C1493FC8638168601722950C8151FF6A802476C93EC460B3BC5323C8A7951C71/9fde706a812c451ebc7257ab76e05cdb/pdf/media/ac7a2dfdc9104b30939287bdb76b81fb/D250SA-manual-low-UK-EN.pdf)) |
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| * DC1212 series DC-DC isolators in 20-40((and possibly 60A according to manual nomenclature)) output. Switched on by ignition circuit on the D+ port.((https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf)) DIP switches for battery type, Vabs and Vfloat. [[https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf|manual]] (pdf) | * DC1212 series DC-DC isolators in 20-40((and possibly 60A according to manual nomenclature)) output. Switched on by ignition circuit on the D+ port.((https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf)) DIP switches for battery type, Vabs and Vfloat. [[https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf|manual]] (pdf) |
| * DCC-series of voltage sensing b2b chargers in [[https://amzn.to/2NGIP6U|20A]] and [[https://amzn.to/33HJ8ns|40A versions]]. | * DCC-series of voltage sensing b2b chargers in [[https://amzn.to/2NGIP6U|20A]] and [[https://amzn.to/33HJ8ns|40A versions]]. |
| * DCC50S [[https://amzn.to/2QYuswm|50A model with MPPT charging]]. MPPT input limited to 25v.((per the manual)) - [[https://www.renogy.com/content/RBC50D1S-G1/RBC50D1S-G1-Manual.pdf|manual]] (pdf) The 50A may refer to 25A MPPT and 25A alternator charging.((manual suggests 50A max indivudiually -- FIXME)) | * DCC50S [[https://amzn.to/2QYuswm|50A model with MPPT charging]]. MPPT input limited to 25v.((per the manual)) - [[https://www.renogy.com/content/RBC50D1S-G1/RBC50D1S-G1-Manual.pdf|manual]] (pdf) Total output is limited to 50A from either source. If both solar and alternator charging are active their [[http://img.mousetrap.net/misc/renogy2525.jpg|respective outputs are limited to 25A each]]. |
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| The [[https://amzn.to/38399Ak|FlexCharge NC25a-12]] is a 25A charger that claims exceptional efficiency((http://www.flexcharge.com/nc25a.htm)), the ability to dump loads, and [[http://www.flexcharge.com/charging%20explained.htm|a proprietary charging algorithm]]. | The [[https://amzn.to/38399Ak|FlexCharge NC25a-12]] is a 25A charger that claims exceptional efficiency((http://www.flexcharge.com/nc25a.htm)), the ability to dump loads, and [[http://www.flexcharge.com/charging%20explained.htm|a proprietary charging algorithm]]. |
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| | ==== Victron ==== |
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| | Victron makes several DC-DC chargers, some of which are configurable by bluetooth. 12v examples: |
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| | * Orion-Tr 12|12-20 20A |
| | * Orion-Tr 12|12-30 30A |
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