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--- electrical:12v:b2b [2018/12/28 13:38]
frater_secessus [Sterling]
+++ electrical:12v:b2b [2018/12/28 14:32]
frater_secessus [CTEK D250 series]
@@ Line 12: / Line 12: @@
 The [[https://amzn.to/2TozjWu|SmartPass accessory]] bypasses the D250SA when the house battery wants > 20A of current.  This will generally happen in the first half of Bulk mode. When the house battery demand drops below 20A control is handed back to the D250SA for boosting to Absorption voltage.((https://www.4x4community.co.za/forum/showthread.php/292297-Ctek-250-upgrade-to-smartpass?p=3823781#post3823781))\\
-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))
+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))  It requires >= 80w of solar for reliable solar charging.(())(())  There are reports that the MPPT algorithm is not particularly robust and is better thought of as an add-on for the alternator charging circuit.((https://expeditionportal.com/forum/threads/ctek-250s-poor-solar-performance.198052/))  FIXME
 ===== Sterling =====

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