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![]() Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~ |
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Whiskers wrote on 28/07/2017 18:19:
Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy |
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On 2017-07-29, Roy wrote:
Whiskers wrote on 28/07/2017 18:19: Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy Thanks. Looks as though a trip to Halfords is in the offing then. I'm sure I'll make other mistakes too as I learn the way of the campervan. -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~ |
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In article ,
Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy Thanks. Looks as though a trip to Halfords is in the offing then. I'm sure I'll make other mistakes too as I learn the way of the campervan. Well the presence of a fridge is irrelevant to the size of battery or its charge as the fridge never runs off the battery. 6W solar battery chargers are a waste of time IME. Leisure (deep cycle) batteries are more resilient to discharge than normal auto batteries so you may get away with it. Charge it up and leave it disconnected for 24 hours then measure the voltage. Should be 12v. N.B. some modern chargers will not actually work on a totally flat battery. Alternative is to put it in the campervan and go for a drive. 75ah (same as mine) is adequate unless you are a TV/computer addict. -- Bert |
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On 2017-08-01, bert wrote:
In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy Thanks. Looks as though a trip to Halfords is in the offing then. I'm sure I'll make other mistakes too as I learn the way of the campervan. Well the presence of a fridge is irrelevant to the size of battery or its charge as the fridge never runs off the battery. My fridge is a 12v electric compressor fridge, and when the leisure battery wasn't flat it did work and sounded just like the fridge at home. It has no connection to the bottled gas that makes the cooker work. It doesn't run off the engine-starter battery either. 6W solar battery chargers are a waste of time IME. They're sold as 'battery conditioners'; I think the idea is that they keep a charged battery topped up rather than charge it from flat. A couple of sunny days did get the charge indicator up from 'flat - red LED' to 'almost flat - amber LED' but it dropped back to red as soon as the solar panel was disconnected. There was enough charge to run the cabin LED strip lights for a short while. Leisure (deep cycle) batteries are more resilient to discharge than normal auto batteries so you may get away with it. That was what I thought. Charge it up and leave it disconnected for 24 hours then measure the voltage. Should be 12v. N.B. some modern chargers will not actually work on a totally flat battery. Alternative is to put it in the campervan and go for a drive. 75ah (same as mine) is adequate unless you are a TV/computer addict. Any idea how long a drive? 20 miles doesn't seem to have been enough, but that was in slow moving stop-go urban traffic. Thanks for responding ![]() -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~ |
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In article ,
Whiskers writes On 2017-08-01, bert wrote: In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy Thanks. Looks as though a trip to Halfords is in the offing then. I'm sure I'll make other mistakes too as I learn the way of the campervan. Well the presence of a fridge is irrelevant to the size of battery or its charge as the fridge never runs off the battery. My fridge is a 12v electric compressor fridge, and when the leisure battery wasn't flat it did work and sounded just like the fridge at home. You need to check the spec for current (or power rating) and power usage but the consumption should be fairly low so 75AH should be OK. Does your fridge have battery monitoring? If so do a "suck it and see" test. It has no connection to the bottled gas that makes the cooker work. It doesn't run off the engine-starter battery either. Maybe not directly but when the vehicle engine is running it will be charging the battery supplying the fridge which is effectively the same thing. 6W solar battery chargers are a waste of time IME. They're sold as 'battery conditioners'; I think the idea is that they keep a charged battery topped up rather than charge it from flat. A couple of sunny days did get the charge indicator up from 'flat - red LED' to 'almost flat - amber LED' but it dropped back to red as soon as the solar panel was disconnected. There was enough charge to run the cabin LED strip lights for a short while. I had a similar one. Didn't produce anything except in bright sunlight. They should have a diode in the output circuit to prevent the battery discharging back through the charger when its output falls. Leisure (deep cycle) batteries are more resilient to discharge than normal auto batteries so you may get away with it. That was what I thought. Charge it up and leave it disconnected for 24 hours then measure the voltage. Should be 12v. N.B. some modern chargers will not actually work on a totally flat battery. Alternative is to put it in the campervan and go for a drive. 75ah (same as mine) is adequate unless you are a TV/computer addict. Any idea how long a drive? 20 miles doesn't seem to have been enough, but that was in slow moving stop-go urban traffic. Alternators are capable of charging even when idling. If you don't have a charger you could take the battery to a dealer and they will test it for you. Thanks for responding ![]() -- Bert |
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In message
bert wrote: In article , Whiskers writes On 2017-08-01, bert wrote: In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: Now proud owner of a proper campervan, but I think I may have killed the leisure battery by letting it run flat. I thought they were meant to be able to tolerate that sort of thing, but now I'm not so sure. The present one is rated at 75AH which seems a bit small for a vehicle with a fridge and likely to have very little time with a mains connection. I have now got a 6W solar 'battery conditioner' but it seems to be too late for this battery. Any advice would be most welcome! Leaving the battery flat for a length of time will lead to its demise. 6 watts to recharge it is a bit optimistic. Roy Thanks. Looks as though a trip to Halfords is in the offing then. I'm sure I'll make other mistakes too as I learn the way of the campervan. Well the presence of a fridge is irrelevant to the size of battery or its charge as the fridge never runs off the battery. My fridge is a 12v electric compressor fridge, and when the leisure battery wasn't flat it did work and sounded just like the fridge at home. You need to check the spec for current (or power rating) and power usage but the consumption should be fairly low so 75AH should be OK. Does your fridge have battery monitoring? If so do a "suck it and see" test. It has no connection to the bottled gas that makes the cooker work. It doesn't run off the engine-starter battery either. Maybe not directly but when the vehicle engine is running it will be charging the battery supplying the fridge which is effectively the same thing. 6W solar battery chargers are a waste of time IME. They're sold as 'battery conditioners'; I think the idea is that they keep a charged battery topped up rather than charge it from flat. A couple of sunny days did get the charge indicator up from 'flat - red LED' to 'almost flat - amber LED' but it dropped back to red as soon as the solar panel was disconnected. There was enough charge to run the cabin LED strip lights for a short while. I had a similar one. Didn't produce anything except in bright sunlight. They should have a diode in the output circuit to prevent the battery discharging back through the charger when its output falls. Leisure (deep cycle) batteries are more resilient to discharge than normal auto batteries so you may get away with it. That was what I thought. Charge it up and leave it disconnected for 24 hours then measure the voltage. Should be 12v. N.B. some modern chargers will not actually work on a totally flat battery. Alternative is to put it in the campervan and go for a drive. 75ah (same as mine) is adequate unless you are a TV/computer addict. Any idea how long a drive? 20 miles doesn't seem to have been enough, but that was in slow moving stop-go urban traffic. Alternators are capable of charging even when idling. If you don't have a charger you could take the battery to a dealer and they will test it for you. Thanks for responding ![]() I too have a van with a compressor fridge. I think this is the reason why it has a larger leisure battery, I think from memory something like 110AH, but recommended 160AH if you are likely to spend significant time without a hook-up. A larger battery is certainly a good idea, since although a solar panel helps, if roof mounted it is unlikely to be large enough to power the fridge without help. So if you have space for it I would recommend getting a larger leisure battery than 75AH. -- My weather station data is now uploaded to Weather Underground. http://www.wunderground.com/personal...D=IENGLAND1344 Local forecast at: http://www.wunderground.com/q/zmw:00...p=IENGLAND1344 |
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On 2017-08-02, Martin Dixon wrote:
In message bert wrote: In article , Whiskers writes On 2017-08-01, bert wrote: In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: [...] I too have a van with a compressor fridge. I think this is the reason why it has a larger leisure battery, I think from memory something like 110AH, but recommended 160AH if you are likely to spend significant time without a hook-up. A larger battery is certainly a good idea, since although a solar panel helps, if roof mounted it is unlikely to be large enough to power the fridge without help. So if you have space for it I would recommend getting a larger leisure battery than 75AH. Thanks for responding. Space, it transpires, is the limiting factor for my van; the compartment holding the leisure battery won't take anything larger than the existing 75Ah unit. I bought a multimeter for checking the battery and fuses, and found the leisure battery reading only 2.3 volts and going for a drive made no difference. The fuses seem to be OK. So I now have a new Halfords 70Ah unit, which was supplied 'charged' so at present all the accessories seem to be working properly. I'll use the 'battery conditioner' solar panel for what it's worth - there's no way I can plug into the mains while parked at home. -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~ |
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On 2017-08-02, bert wrote:
In article , Whiskers writes On 2017-08-01, bert wrote: In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: [...] You need to check the spec for current (or power rating) and power usage but the consumption should be fairly low so 75AH should be OK. Does your fridge have battery monitoring? If so do a "suck it and see" test. The dealer said the fridge would flatten the battery in 8 hours. It did ![]() literature that came with the fridge - I think it's packed into one of the storage spaces in the van at the moment. It has no connection to the bottled gas that makes the cooker work. It doesn't run off the engine-starter battery either. Maybe not directly but when the vehicle engine is running it will be charging the battery supplying the fridge which is effectively the same thing. 6W solar battery chargers are a waste of time IME. They're sold as 'battery conditioners'; I think the idea is that they keep a charged battery topped up rather than charge it from flat. A couple of sunny days did get the charge indicator up from 'flat - red LED' to 'almost flat - amber LED' but it dropped back to red as soon as the solar panel was disconnected. There was enough charge to run the cabin LED strip lights for a short while. I had a similar one. Didn't produce anything except in bright sunlight. They should have a diode in the output circuit to prevent the battery discharging back through the charger when its output falls. The one I have says it's safe to leave connected overnight. We'll see! Leisure (deep cycle) batteries are more resilient to discharge than normal auto batteries so you may get away with it. That was what I thought. Charge it up and leave it disconnected for 24 hours then measure the voltage. Should be 12v. N.B. some modern chargers will not actually work on a totally flat battery. Alternative is to put it in the campervan and go for a drive. 75ah (same as mine) is adequate unless you are a TV/computer addict. Any idea how long a drive? 20 miles doesn't seem to have been enough, but that was in slow moving stop-go urban traffic. Alternators are capable of charging even when idling. If you don't have a charger you could take the battery to a dealer and they will test it for you. I've got a new 70Ah unit from Halfords (their 115 Ah units are too big for the compartment in my van) so things are working now. I used a multimeter to check the old battery and it registered only 2.3 volts, after going for a drive, so I decided to replace it. -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~ |
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In article ,
Whiskers writes On 2017-08-02, Martin Dixon wrote: In message bert wrote: In article , Whiskers writes On 2017-08-01, bert wrote: In article , Whiskers writes On 2017-07-29, Roy wrote: Whiskers wrote on 28/07/2017 18:19: [...] I too have a van with a compressor fridge. I think this is the reason why it has a larger leisure battery, I think from memory something like 110AH, but recommended 160AH if you are likely to spend significant time without a hook-up. A larger battery is certainly a good idea, since although a solar panel helps, if roof mounted it is unlikely to be large enough to power the fridge without help. So if you have space for it I would recommend getting a larger leisure battery than 75AH. Thanks for responding. Space, it transpires, is the limiting factor for my van; the compartment holding the leisure battery won't take anything larger than the existing 75Ah unit. I bought a multimeter for checking the battery and fuses, and found the leisure battery reading only 2.3 volts and going for a drive made no difference. The fuses seem to be OK. So I now have a new Halfords 70Ah unit, which was supplied 'charged' so at present all the accessories seem to be working properly. I'll use the 'battery conditioner' solar panel for what it's worth - there's no way I can plug into the mains while parked at home. Worth checking the voltage at the battery terminals with the engine running. Should read about 13.8 volts to show the battery is being charged. -- Bert |