Re: [EVDL] Ego vs Greenworks? 7aH EGO battery?
My e-mowers have been corded type, so no battery problems. However, the replacement motor I put in the B was a 36 volt and I ran it from a 10ah PIng lithium battery that I carried in a backpack, which made the mower much more maneuverable. I ran it that way for 4 seasons, until the motor packed it in from bearing play that I carelessly didn't recognize until the armature demolished the magnets. I think e-mowers in genearal are probably hard on batteries, because they present large loads on batteries kept small so the mower doesn't get too heavy or expensive. With my B 36v, the idle motor load - just spinning the blade in open air, no cutting - was IMO obscenely high, 8+ amps. I wasn't able to consistently read the ammeter when cutting, but I had a 20a breaker on the battery, and it tripped now and again in very heavy grass and when I hit roots. The battery is LiFePO4, not LiCo. I don't know whether that makes a difference in a situation like this, but it held up through the 4 seasons I used the mower, even though the load was higher than Ping advises (they like to stay at or below 1C). David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = OPTIMIST: The glass is half full. PESSIMIST: The glass is half empty. REALIST: The glass contains N ml. Next question? -- Found on the net = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Ego vs Greenworks? 7aH EGO battery?
The ego warranty is only 3 years on the batteries and chargers (5 years on the equipment). It is only good for the original purchaser, and only if purchased at an authorized dealer, and you must have a copy of your receipt to prove the above. Other than those restrictions, I've been relatively happy with their warranty coverage, having to make use of it several times on the self propel unit on my mower. (I have most of their other lawn equipment and the mower SP unit is the only thing that I've ever had an issue with.) I got a message that they were having issues with the forum provider and were going to be switching to a different provider, but no timeframe for when they would come back. Jay On 6/24/20 6:30 PM, Haudy Kazemi via EV wrote: Maybe you can claim on warranty? Also, I noticed the EGO Community forums are not accessible now. They were working earlier today. The message I see now is unclear about whether it is a maintenance outage or a decommissioning where the forum is not coming back. There was decent info in those forums. On Wed, Jun 24, 2020, 16:04 Robert Bruninga wrote: I have the 7.5Ah EGO self driving and used to rave about it and take it to talks about Energy. But then my battery (or charger) died and I cannot face a $350 battery for a $450 mower. I suspect the charger maybe. I have manually charged the cells while checking all the voltages and they seem to be OK . But in the mower or charger they only show the RED light. System is maybe 3 years old? Bob -Original Message- From: EV On Behalf Of Haudy Kazemi via EV Sent: Wednesday, June 24, 2020 3:55 PM To: Electric Vehicle Discussion List Cc: Haudy Kazemi Subject: Re: [EVDL] Ego vs Greenworks? No experience with Stihl electrics., but I do have 2-3 years experience using 2 EGO manual drive mowers (and 2 blowers). They're much better than the previous Pb-acid mower and corded mowers I have used. The 7.5 Ah 56v battery (14s3p, using 2.5Ah 18650 cells) (14 x 4.0v = 56v nominal, 14x4.2=58.8 peak) is best for the mower, especially if facing thick grass as that is a high C rate scenario. The 5.0 Ah battery (14s2p, 2.5Ah cells) works fine for smaller yards or thinner grass. 4.0 Ah batteries (14s2p, 2.0Ah cells), 2.0 Ah (14s1p, 2.0Ah cells), and 2.5 Ah (14s1p, 2.5Ah cells) batteries also exist. Online searches indicate a 10.0Ah battery known as BA5600T also exists, at least in Europe. I guess that may be 14s3p or 14s4p, respectively using 3.3Ah or 2.5 Ah cells. There is a battery external physical dimensions size limit in their mower and snowblower designs, possibly preventing 14s4p. It is unclear if there is a switch from 18650 to 21700 cells in the 10.0 Ah unit. From the cell capacity ranges published here, it appears 3.3Ah+ capacity 18650 cells exist, making a 14s3p 10.0Ah configuration possible. https://www.dnkpower.com/teslas-mass-production-21700-battery/ A weakness in older EGO batteries is there is no state of charger indicator until you are down to the last 15% when a light turns solid red. They have added a gauge to new batteries. On Wed, Jun 24, 2020, 13:15 Denis Boutet via EV wrote: Hi everyone, any one have experience with Stihl? Denis Le 20-06-24 à 13 h 19, EVDL Administrator via EV a écrit : I've owned a total of 4 E-mowers (not counting the Elec-traks) so far since 1994 - a B, two Yard Machines (MTD), and a Greenworks. The B lasted the longest, but I had to replace the motor and the wheels. Eventually the replacement motor died too, and since the plastic deck was starting to crack from age and hard use, I gave up on it. But at least spare parts were mostly available, and usually at reasonable prices. The MTDs' motors both failed too. The official factory motors were priced over $300, more than the entire mowers cost, so the mowers were essentially disposable. Probably the Greenworks will prove to be disposable too. It's a cheap and cheerful Chinese mower. David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = First they came for the journalists. We don't know what happened after that. -- Unknown = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA ( http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: < http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200624/a73 8989d/attachment.html ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
Re: [EVDL] Ego vs Greenworks? 7aH EGO battery?
Maybe you can claim on warranty? Also, I noticed the EGO Community forums are not accessible now. They were working earlier today. The message I see now is unclear about whether it is a maintenance outage or a decommissioning where the forum is not coming back. There was decent info in those forums. On Wed, Jun 24, 2020, 16:04 Robert Bruninga wrote: > I have the 7.5Ah EGO self driving and used to rave about it and take it to > talks about Energy. > But then my battery (or charger) died and I cannot face a $350 battery for > a > $450 mower. > I suspect the charger maybe. I have manually charged the cells while > checking all the voltages and they seem to be OK . > > But in the mower or charger they only show the RED light. > System is maybe 3 years old? > > Bob > > -Original Message- > From: EV On Behalf Of Haudy Kazemi via EV > Sent: Wednesday, June 24, 2020 3:55 PM > To: Electric Vehicle Discussion List > Cc: Haudy Kazemi > Subject: Re: [EVDL] Ego vs Greenworks? > > No experience with Stihl electrics., but I do have 2-3 years experience > using 2 EGO manual drive mowers (and 2 blowers). They're much better than > the previous Pb-acid mower and corded mowers I have used. > > The 7.5 Ah 56v battery (14s3p, using 2.5Ah 18650 cells) (14 x 4.0v = 56v > nominal, 14x4.2=58.8 peak) is best for the mower, especially if facing > thick > grass as that is a high C rate scenario. The 5.0 Ah battery (14s2p, 2.5Ah > cells) works fine for smaller yards or thinner grass. 4.0 Ah batteries > (14s2p, 2.0Ah cells), 2.0 Ah (14s1p, 2.0Ah cells), and 2.5 Ah (14s1p, 2.5Ah > cells) batteries also exist. > > Online searches indicate a 10.0Ah battery known as BA5600T also exists, at > least in Europe. I guess that may be 14s3p or 14s4p, respectively using > 3.3Ah or 2.5 Ah cells. There is a battery external physical dimensions size > limit in their mower and snowblower designs, possibly preventing 14s4p. > > It is unclear if there is a switch from 18650 to 21700 cells in the 10.0 Ah > unit. From the cell capacity ranges published here, it appears 3.3Ah+ > capacity 18650 cells exist, making a 14s3p 10.0Ah configuration possible. > https://www.dnkpower.com/teslas-mass-production-21700-battery/ > > A weakness in older EGO batteries is there is no state of charger indicator > until you are down to the last 15% when a light turns solid red. They have > added a gauge to new batteries. > > > On Wed, Jun 24, 2020, 13:15 Denis Boutet via EV wrote: > > > Hi everyone, any one have experience with Stihl? > > > > Denis > > > > Le 20-06-24 à 13 h 19, EVDL Administrator via EV a écrit : > > > I've owned a total of 4 E-mowers (not counting the Elec-traks) so > > > far > > since > > > 1994 - a B, two Yard Machines (MTD), and a Greenworks. > > > > > > The B lasted the longest, but I had to replace the motor and the > > wheels. > > > Eventually the replacement motor died too, and since the plastic > > > deck was starting to crack from age and hard use, I gave up on it. > > > But at least spare parts were mostly available, and usually at > > > reasonable prices. > > > > > > The MTDs' motors both failed too. The official factory motors were > > priced > > > over $300, more than the entire mowers cost, so the mowers were > > essentially > > > disposable. > > > > > > Probably the Greenworks will prove to be disposable too. It's a > > > cheap > > and > > > cheerful Chinese mower. > > > > > > David Roden, EVDL moderator & general lackey > > > > > > To reach me, don't reply to this message; I won't get it. Use my > > > offlist address here : http://evdl.org/help/index.html#supt > > > > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > First they came for the journalists. We don't know what happened > > > after that. > > > > > > -- Unknown = = = = = = = = > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > > > > ___ > > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > > ARCHIVE: http://www.evdl.org/archive/index.html > > > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > Please discuss EV drag racing at NEDRA ( > > http://groups.yahoo.com/group/NEDRA) > > > > > -- next part -- An HTML attachment was > > scrubbed... > > URL: < > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200624/a73 > > 8989d/attachment.html > > > > > ___ > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/index.html > > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > Please discuss EV drag racing at NEDRA ( > > http://groups.yahoo.com/group/NEDRA) > > > > > -- next part -- > An HTML attachment was scrubbed... > URL: > < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200624/9fd79013/attachment.html > > >
