Jon 412 Posted May 15, 2020 Share Posted May 15, 2020 I’m looking for a replacement charger for my Bowthurster battery bank The rest of the boats system is 12v with a step up charger to this 24volt bank Do any of you know of a unit or is it possible to connect each of the batteries in the 24v bank to the 12v system so they can charge off that and still give 24v. current unit that’s faulting as soon as I put power on is a Sterling BB122450 ie battery to battery 12v to 24v 50 amp https://sterling-power.com/products/battery-to-battery-chargers Quote Link to post Share on other sites
Jon 412 Posted May 15, 2020 Author Share Posted May 15, 2020 I may have found the fault I took it out yesterday and have it in my workshop, with a 12v battery connected to the in supply and connected to a battery charger and two 12v batteries connected in to create a 24v bank I can now see the led lights that are not visible when installed in the boat. It faulted straight away saying battery temp fault. So I’ve removed the wire that is just coiled up in the battery box and other end connected to unit, now it’s working as per. next question is should I just leave this disconnect or it’s a two core wire with a cap on end, can I get something similar here or fix it ? Quote Link to post Share on other sites
Island Time 1,293 Posted May 15, 2020 Share Posted May 15, 2020 How many amps is the charger? Quote Link to post Share on other sites
Jon 412 Posted May 15, 2020 Author Share Posted May 15, 2020 50 Quote Link to post Share on other sites
dutyfree 170 Posted May 15, 2020 Share Posted May 15, 2020 thats an interesting unit, I think. I have a 12v and 24v system with two alternators. Does this system let me connect the two battery banks together? Quote Link to post Share on other sites
wheels 544 Posted May 15, 2020 Share Posted May 15, 2020 Jon, it's not a capacitor on the end. It is a temp sensor. The sensor is normally glued to the case of a battery, or samwedged in between the cases of two batteries. It is quiet possible it is faulty. They only way to really know is to replace it. You can do without it. It is not a circuit that has a lot of current draw, so no huge temperature variances during charging. If you ever needed to replace the Charge Unit, then go for the same thing again. They have a good reputation. DutyFree, you may need to explain a little more. It is just a 24V Charger that uses the 12V Bank as the supply voltage instead of 230V mains. Quote Link to post Share on other sites
Jon 412 Posted May 15, 2020 Author Share Posted May 15, 2020 I emailed their website last night reply below They have replacement parts on their website, just not the exact same one. Hi , we have never had a faulty temp sensor, no I don’t think there would be anyone with a spare one, you can buy from UK. please note its not that important the product works fine without it , so you can take you time getting one, most people don’t fit them so if you ask around I am sure there are some in NZ Quote Link to post Share on other sites
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