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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Cordless lawn mowers - any good?
I've just decided the old petrol rotary is too rusted to repair again
and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave |
#2
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Cordless lawn mowers - any good?
NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? The question isn't what's the capacity now, it's what will the capacity be in two years time... Ben |
#3
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Cordless lawn mowers - any good?
NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Not used one, but is there any reason to suggest they would be any better than a mains powered electric mower? If not then stick to petrol! -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#4
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Cordless lawn mowers - any good?
On Mon, 29 Oct 2007 20:07:00 +0000, NoSpam
wrote: I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Does it say what the charge time is?If you only manage to cut half the lawn (Think first cut of the season which may well be a bit long, or when you've missed the right length cos of a holiday) then you'll struggle to get it charged and cut again the same day. -- http://www.orderonlinepickupinstore.co.uk Ah fetch it yourself if you can't wait for delivery http://www.freedeliveryuk.co.uk Or get it delivered for free |
#5
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Cordless lawn mowers - any good?
NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Smallest petrol engined mowers I've seen have been 2hp, which is 1.5kW. To get 1.5kW for 1 hour at 12v would require 125A and 125Ah - or allowing 25% for fast discharge, 156Ah. IRL they'll be higher than 12v, but thats to give an easy comparison to batteries we're all familiar with. IOW something has to give, with real life power output being lower than the lowest available petrol mower. Also a large set of batteris and charger costs a lot more than a mains lead, so again you're getting a lot less mower for the equivalent cost. NT |
#6
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Cordless lawn mowers - any good?
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#7
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Cordless lawn mowers - any good?
NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Dave, No idea how good these are but I can buy them at discount. I've mislaid your email addy but you can contact me at bobdotminchinatntlworlddotcom and I'll send you the staff prices. Bob |
#8
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Cordless lawn mowers - any good?
On Mon, 29 Oct 2007 20:07:00 +0000, NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Talking about the Li-ion batteries, how do these hold/deliver charge in cold weather? I've noticed that the batteries for my camera (also Li-ion) last a matter of minutes when I'm using the camera at night during the winter. Now I appreciate that you (probably :-) won't be cutting your grass at night, but the chemistry in the cells does reduce their capacity when they're cold. So you may find that you'll get less grass-cutting capability in the early morning if your mower's been kept in a cold shed overnight. -- .................................................. ......................... .. never trust a man who, when left alone ...... Pete Lynch . .. in a room with a tea cosy ...... Marlow, England . .. doesn't try it on (Billy Connolly) ..................................... |
#9
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Cordless lawn mowers - any good?
Peter Lynch wrote:
On Mon, 29 Oct 2007 20:07:00 +0000, NoSpam wrote: I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Talking about the Li-ion batteries, how do these hold/deliver charge in cold weather? I've noticed that the batteries for my camera (also Li-ion) last a matter of minutes when I'm using the camera at night during the winter. Now I appreciate that you (probably :-) won't be cutting your grass at night, but the chemistry in the cells does reduce their capacity when they're cold. So you may find that you'll get less grass-cutting capability in the early morning if your mower's been kept in a cold shed overnight. Lion would be a pretty expensive technology for a high power battery. Output falls with lead acids too of course, at sub zero. NT |
#10
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Cordless lawn mowers - any good?
Peter Lynch wrote:
On Mon, 29 Oct 2007 20:07:00 +0000, NoSpam wrote: I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave Talking about the Li-ion batteries, how do these hold/deliver charge in cold weather? Hold is good, deliver is less good. But probably good enough. They are far more like lead acid in their general feel and behaviour than nickel base cells I've noticed that the batteries for my camera (also Li-ion) last a matter of minutes when I'm using the camera at night during the winter. That is probably poor cells that simply sag under load when cold: the capacity should not be affected. Ive seen cells that run past limits appear to do just that, but if left for a few minutes, the voltage comes up and they will deliver full capacity. Now I appreciate that you (probably :-) won't be cutting your grass at night, but the chemistry in the cells does reduce their capacity when they're cold. So you may find that you'll get less grass-cutting capability in the early morning if your mower's been kept in a cold shed overnight. |
#11
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Cordless lawn mowers - any good?
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#12
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Cordless lawn mowers - any good?
On 29 Oct, 20:07, NoSpam wrote:
I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave May not be your cup of tea but you could get a scythe. A lot less pollution than a mower. Cheaper to run and service Good exercise £39 in p&p from http://www.get-digging.co.uk/tools.htm |
#13
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Cordless lawn mowers - any good?
On Wed, 31 Oct 2007 06:51:11 -0700, nafuk
wrote: On 29 Oct, 20:07, NoSpam wrote: I've just decided the old petrol rotary is too rusted to repair again and, while doing some research into a replacement, have stumbled over cordless mowers. I'm naturally cynical about claims but the Bosch Rotak specs claim they're OK for 400m2 of lawn on a single charge, and the Lithium-ion batteries should last well (if they don't burst into flames :-( ) - but has anyone actually used one? Are they any good? Dave May not be your cup of tea but you could get a scythe. A lot less pollution than a mower. Cheaper to run and service Good exercise £39 in p&p from http://www.get-digging.co.uk/tools.htm Dont forget the cost of plasters and trips to A&E if you get it wrong. Robert |
#15
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Cordless lawn mowers - any good?
Si wrote:
In message , lid writes May not be your cup of tea but you could get a scythe. A lot less pollution than a mower. Cheaper to run and service Good exercise £39 in p&p from http://www.get-digging.co.uk/tools.htm Dont forget the cost of plasters and trips to A&E if you get it wrong. I used a scythe for 2 summers as a teenager - only injuries were splinters from the less than perfect handle. Long handled ones are unwieldier, but can cut much more per stroke. However, is a scythe going to be up to cutting through all the woody bits? NT |
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