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    Just a boat
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    Lazy Days
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  1. Being a Sea otter it probably has a GI already and the marine grade of Aluminium they use is also used on lots of sea going boats,
  2. Finally found it, the Sterling battery to battery charger must have a big capacitor in it.
  3. Red 25mm2 cable comes from back of boat into a 100A fuse then onto pos terminal on BT battery, a red 60mm2 cable then comes of this terminal to a 350A fuse then on to an isolation switch then onto the BT. Black 25mm2 cable comes from back of boat straight to neg terminal on BT battery, a black 60mm" cable then goes from this terminal to the BT. The pos feed to the control unit comes off the BT battery terminal and I have to remove it to take the 25mm2 red cable off, so no the two arn't connected when I measure the voltage in the engine bay.
  4. Managed to get back to boat today to have another look. As I suspected BT control unit is feed from BT battery not starter battery as manufacturer advises. However that means that whatever is giving the 25mm2 cable capacity is definetley not the BT control unit.
  5. You might have something here, the BT manufacturers wiring diagram shows that the control unit is powered from the starter battery, but there are definatley no connections to the starter battery and the isolators were turned off. I also can't belive they would have run another cable all the way to the back of the boat when the BT battery is sitting next to BT. I will have another look at the weekend to see if they have made a connection somewhere down the line.
  6. Just realised you mean the BT battery. Yes I have a BT battery but that is what Iam disconnecting at the front and that is what is sending the 12.6volts to the back.
  7. What would have a large capacitor in it? If there is another battery I haven't found it in the last 3 years and I have no idea where it could be. Haven't got an inverter.
  8. I want to use a different technology service battery but my bow thruster battery is connected to the service battery. I thought it would just be a simple job of moving the cable from the pos of the service battery to the starter battery but nothing is ever simple. Boat is quite simple, no solar and no inverters. All testing done with both isolators off and no mains connection. So I have 3 x25mm2 cables connected to the pos of the service battery, I take each one off in turn and measure to see if its live. I find one that measures 12.6 volts, I put some tape over the end and go to front of boat and disconnect the pos 25mm2 cable going to the BT battery, I also put some tape on it. I go back to the engine bay and measure to see if the cable I disconnected earlier is dead. To my supprise it measures 12.0 volts but slowly drops over the next 2 minutes to zero. So I reconnect the pos cable to the BT battery, confirm I get 12.6volts at the engine bay end and then disconnect the BT battery again. The same happens, I get 12.0 volts initialy dropping to zero over the next two minutes. I am pretty sure that there is nothing else connected to this cable but not 100% sure. Even so I can't think what could do this. Any ideas?
  9. Thanks Roaldo47 you learn something new every day. Daren
  10. Always cheaper to buy a recon. Hurth Hbw50/100/125 Marine Gearboxes | eBay Getting the parts for just one box just does not pay. Think Midland chandlers have some to.
  11. When taking conductance measurements (or ohmic measurements of any type) never use the stainless steel hex head set screw as you always measure the additional resistance of the SS as well. The same will apply to the draw nut under the connector as again there is additional resistance. This was always one of the first things we taught when we ran training courses for BT engineers. Many just would just not believe it until they actually put a meter on a cell. Personal I never understood why the Vasaline never affected the result but it just didn't.
  12. Due to some Californian regulation after 72 hours of float the PCU goes to sleep. That is if it is used in bc mode but you can change it to PS mode to stop this. Instructions are on the sterling web site. Sorry cant get the link to paste.
  13. 8 or 9 years ago when Haze first came to the UK they managed to create a bit of a reputation in the telecoms market with their VRLA products. Our advice was if you buy one ask for the free fire extinguisher as well. They had to pull their socks up pretty quickly. Today they are just an average bottom end brand.
  14. And the answer is............. Chester Zoo. Waterways wildlife corridor feature.
  15. close.... It's in a public place, you pay entry to get in. They've even made the top gates leak for authenticity.
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