When I moved house about five years ago, I stupidly left my motor mower
in the shed!! Stupid Me! So, over the last five years, I've been getting
a 'Jim's Gardening' guy in to mow and clean up the garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It did
a good enough job for me. The Battery takes about two hours to recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged to
a particular amount, whenever they got to that level, they would stop working.
They then had to be 'manually' flattened by continually being turned on
.... and turned on .... and turned on ... Until they were 'flat', so
that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery be
fully recharged ready for use .... even though that use might be a month
or two hence??
When I moved house about five years ago, I stupidly left my motor mower
in the shed!! Stupid Me! So, over the last five years, I've been getting
a 'Jim's Gardening' guy in to mow and clean up the garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It did
a good enough job for me. The Battery takes about two hours to recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged to
a particular amount, whenever they got to that level, they would stop working.
They then had to be 'manually' flattened by continually being turned on .... and turned on .... and turned on ... Until they were 'flat', so
that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery be fully recharged ready for use .... even though that use might be a month
or two hence??
Back in a previous life, I was an Electronic Technician,
at the
time of Ni-Cad batteries being introduced,
the recharge story was
Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged to
a particular amount, whenever they got to that level, they would stop working.
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery be
fully recharged ready for use .... even though that use might be a month
or two hence??
On 12/2/22 10:13 pm, Daniel65 wrote:
When I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've been
getting a 'Jim's Gardening' guy in to mow and clean up the garden
every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It
did a good enough job for me. The Battery takes about two hours to
recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was that
Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged
to a particular amount, whenever they got to that level, they would
stop working.
They then had to be 'manually' flattened by continually being turned
on .... and turned on .... and turned on ... Until they were 'flat',
so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery be
fully recharged ready for use .... even though that use might be a
month or two hence??
Forget everything you know about Nicads. Almost all modern battery tools
-ause Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for long-term storage is 60-70%, not empty or full. The self-discharge rate
is basially zero compared to anything previous.
Clifford Heath wrote on 12/02/2022 11:00 pm:
On 12/2/22 10:13 pm, Daniel65 wrote:
When I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've
been getting a 'Jim's Gardening' guy in to mow and clean up the
garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It
did a good enough job for me. The Battery takes about two hours to
recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was
that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged
to a particular amount, whenever they got to that level, they would
stop working.
They then had to be 'manually' flattened by continually being turned
on .... and turned on .... and turned on ... Until they were 'flat',
so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery
be fully recharged ready for use .... even though that use might be a
month or two hence??
Forget everything you know about Nicads. Almost all modern battery tools
-a-ause Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for
long-term storage is 60-70%, not empty or full. The self-discharge
rate is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
Forget everything you know about Nicads. Almost all modern battery tools
use Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for long-term storage is 60-70%, not empty or full. The self-discharge rate
is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
Clifford Heath wrote on 12/02/2022 11:00 pm:
On 12/2/22 10:13 pm, Daniel65 wrote:
When I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've
been getting a 'Jim's Gardening' guy in to mow and clean up the
garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It
did a good enough job for me. The Battery takes about two hours to
recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was
that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged
to a particular amount, whenever they got to that level, they would
stop working.
They then had to be 'manually' flattened by continually being turned
on .... and turned on .... and turned on ... Until they were 'flat',
so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery
be fully recharged ready for use .... even though that use might be a
month or two hence??
Forget everything you know about Nicads. Almost all modern battery tools
-a-ause Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for
long-term storage is 60-70%, not empty or full. The self-discharge
rate is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
Ah!! So much the same as Ni-Cad, then.
No. One area NiCd differs is that it can withstand continuous low-level overcharging. NiMH and Li batteries die from that kind of treatment.
On 13/02/2022 21:27, Daniel65 wrote:
Clifford Heath wrote on 12/02/2022 11:00 pm:
On 12/2/22 10:13 pm, Daniel65 wrote:
When I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've
been getting a 'Jim's Gardening' guy in to mow and clean up the
garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It
did a good enough job for me. The Battery takes about two hours to
recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was
that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly
used/discharged to a particular amount, whenever they got to that
level, they would stop working.
They then had to be 'manually' flattened by continually being turned
on .... and turned on .... and turned on ... Until they were 'flat',
so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery
be fully recharged ready for use .... even though that use might be
a month or two hence??
Forget everything you know about Nicads. Almost all modern battery tools >>> -a-ause Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for
long-term storage is 60-70%, not empty or full. The self-discharge
rate is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
No, if you treat them like Ni-Cads you will destroy them, even the new
smart ones with charge/discharge limiting circuitry built in to them.
Charge it up, use it, and if it gets low charge it again, other wise
leave it on the shelf until you need to use it.
If you know you are going to use it a lot tomorrow, charge it up today
if it's not full.
On 13/2/22 9:27 pm, Daniel65 wrote:
Clifford Heath wrote on 12/02/2022 11:00 pm:
On 12/2/22 10:13 pm, Daniel65 wrote:
When I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've
been getting a 'Jim's Gardening' guy in to mow and clean up the
garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It
did a good enough job for me. The Battery takes about two hours to
recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was
that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly
used/discharged to a particular amount, whenever they got to that
level, they would stop working.
They then had to be 'manually' flattened by continually being turned
on .... and turned on .... and turned on ... Until they were 'flat',
so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery
be fully recharged ready for use .... even though that use might be
a month or two hence??
Forget everything you know about Nicads. Almost all modern battery tools >>> -a-ause Lithium batteries. I believe the Ryobi ones (like many others)
have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for
long-term storage is 60-70%, not empty or full. The self-discharge
rate is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
No. One area NiCd differs is that it can withstand continuous low-level overcharging. NiMH and Li batteries die from that kind of treatment.
Sorry, should have mentioned it is Lithium-ion.
If I were to "leave it on the shelf" for a month or so (How often do
people mow their lawns?? Often in Spring, not so often rest of yer??),
would the Lithium-ion battery still be holding a charge??
Yes, that's always an option as it only takes a couple of hours on the charger to be fully charged.
I was just wondering .... for the long-term good on the Battery.
Gary R. Schmidt wrote on 13/2/22 11:00 pm:
On 13/02/2022 21:27, Daniel65 wrote:
Clifford Heath wrote on 12/02/2022 11:00 pm:
On 12/2/22 10:13 pm, Daniel65 wrote:
No, if you treat them like Ni-Cads you will destroy them, even the newWhen I moved house about five years ago, I stupidly left my motor
mower in the shed!! Stupid Me! So, over the last five years, I've
been getting a 'Jim's Gardening' guy in to mow and clean up the
garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It >>>>> did a good enough job for me. The Battery takes about two hours to >>>>> recharge.
Back in a previous life, I was an Electronic Technician, and, at the >>>>> time of Ni-Cad batteries being introduced, the recharge story was
that Ni-Cads should be fully discharged occasionally, otherwise they >>>>> developed a 'memory' such that if they were regularly
used/discharged to a particular amount, whenever they got to that
level, they would stop working.
They then had to be 'manually' flattened by continually being turned >>>>> on .... and turned on .... and turned on ... Until they were 'flat', >>>>> so that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two >>>>> hours to fully recharge the Mower Battery, would it be better, after >>>>> use, to leave the battery 'Flat' or 'flatish' or should the battery >>>>> be fully recharged ready for use .... even though that use might be >>>>> a month or two hence??
Forget everything you know about Nicads. Almost all modern battery
tools
use Lithium batteries. I believe the Ryobi ones (like many others) >>>> have smart charge circuits in each battery, that takes care of
balancing, etc.
Lithium prefers not to be flattened fully, and the optimum charge for >>>> long-term storage is 60-70%, not empty or full. The self-discharge
rate is basially zero compared to anything previous.
Ah!! So much the same as Ni-Cad, then. Thanks
smart ones with charge/discharge limiting circuitry built in to them.
Charge it up, use it, and if it gets low charge it again, other wise
leave it on the shelf until you need to use it.
Sorry, should have mentioned it is Lithium-ion.
If I were to "leave it on the shelf" for a month or so (How often do
people mow their lawns?? Often in Spring, not so often rest of yer??),
would the Lithium-ion battery still be holding a charge??
--- Synchronet 3.21d-Linux NewsLink 1.2If you know you are going to use it a lot tomorrow, charge it up today
if it's not full.
Yes, that's always an option as it only takes a couple of hours on the charger to be fully charged.
I was just wondering .... for the long-term good on the Battery.
On 14/02/2022 19:37, Daniel65 wrote:
[SNIP]
Yes, we realise that.
Sorry, should have mentioned it is Lithium-ion.
If I were to "leave it on the shelf" for a month or so (How often do
people mow their lawns?? Often in Spring, not so often rest of yer??),
would the Lithium-ion battery still be holding a charge??
My jump-starter is LiFePO4 - Lithium Iron Phosphate (supposedly the
latest and the greatest :-) ) - it says check every six months and /if/
it's dropped below 70% top it up.
The Bunnings Ozito PXC batteries say they lose 5-10% a month, but they
don't appear to specify a trigger point for re-charging.-a I haven't
noticed any of mine going low enough to worry about, I just charge them after use and toss them back in the bag when they've cooled down, they
get used once a month or so.
Yes, that's always an option as it only takes a couple of hours on theDon't leave them on charge, don't let them get and stay low, store them where the temperature is fairly stable, that's about it.
charger to be fully charged.
I was just wondering .... for the long-term good on the Battery.
-a-a-a-aCheers,
-a-a-a-a-a-a-a Gary-a-a-a B-)
When I moved house about five years ago, I stupidly left my motor mower
in the shed!! Stupid Me! So, over the last five years, I've been getting
a 'Jim's Gardening' guy in to mow and clean up the garden every three or four months, at $75-$100 a go!
A while ago, I learned that one of my sisters had brought a Ryobi
Battery Mower, so this week, I've borrowed it and mowed my lawns. It did
a good enough job for me. The Battery takes about two hours to recharge.
Back in a previous life, I was an Electronic Technician, and, at the
time of Ni-Cad batteries being introduced, the recharge story was that Ni-Cads should be fully discharged occasionally, otherwise they
developed a 'memory' such that if they were regularly used/discharged to
a particular amount, whenever they got to that level, they would stop working.
They then had to be 'manually' flattened by continually being turned on
.... and turned on .... and turned on ... Until they were 'flat', so
that they could then take a full charge and be 'right-as-rain'!!
With that in mind, and remembering that it supposedly only takes two
hours to fully recharge the Mower Battery, would it be better, after
use, to leave the battery 'Flat' or 'flatish' or should the battery be
fully recharged ready for use .... even though that use might be a month
or two hence??
TIA
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