Lock wrote:So Victorious1... Knowing what you know know about the practical range per charge for your stock Gio 500+ bike, curious what you think about the "specs" listed for the bike by the importer:
http://www.giobikes.com/Electric-Scooters-in-Canada/500w-PLUS-E-Scooter/The 48 Volt lead-acid battery system features dual 20AH batteries and will provide 60 kilometers of range on a single charge!
Any chance you questioned the retailer about this before buying?
Would you say this statement might fall under the Canadian Consumer Protection Act?
http://www.e-laws.gov.on.ca/html/statutes/english/elaws_statutes_02c30_e.htm#BK1714. (1) It is an unfair practice for a person to make a false, misleading or deceptive representation. 2002, c. 30, Sched. A, s. 14 (1).
Examples of false, misleading or deceptive representations
(2) Without limiting the generality of what constitutes a false, misleading or deceptive representation, the following are included as false, misleading or deceptive representations:
1. A representation that the goods or services have sponsorship, approval, performance characteristics, accessories, uses, ingredients, benefits or qualities they do not have.
The internet is riddled with ebike seller sites promoting extravagant claims about range per charge, but most of these sellers are smart enough to add a disclaimer in the fine print something like "* this is only true if you are a slim Chinese lady, circling `round and `round a smooth indoor track at slow speeds with no stopping on a brand new bike well oiled with a new battery pack gently broken in and tire pressures at max..."
...and I don't see any disclaimer on the Gio site...
Can you imagine buying any other sort of vehicle and finding out right away that you have to spend a bunch more money just to get it into useful condition?
Victorious1 wrote:Here's my greatest concern about springing the big bucks for lithium batteries for me bikes. Let's say, for example, after I make the transition to lithium I'll post here about the swap with some problem or another with the new lithium packs then I'll end up with a couple of pages of negative posts about oh, you should not have bought that brand, or, you bought the wrong type of lithium battery pack or I used the wrong type of charger and I killed them and on and on. I think that what I am trying to say here is, (and I mean this very respectfully,) don't tell me what I am doing wrong, but, instead please tell me about what you have done right with your batteries and explain it all in accurate, vivid detail so it can be shared and absorbed by others to learn from. I'm really a high tech person, but, I'm like an infant in this field of battery/electric power and it feels like I'm drowning in new knowledge (good and bad) regarding these neat little bikes so it would be awesome to see a consistent stream of posts that all unanimously say do it this way or that way with this specific battery pack and it will work out great for you (or not, because...)
Kin wrote:People are giving an insane amount of re-information and over-information on this thread. Also, above person^: Equating LiPo with LiPO4? Not the same thing, and really useful for different usage patterns.
I think the longterm consensus with everyone *including the OP* is that he'll be wanting to switch to some lithium. Probably LiPO4 for long life and simplicity/safety. Victorious, you mentioned that you want a reliable seller and decent quality goods, at a fair price, so PING is probably your best bet.
But I also understand that you're going to want to use the lead for a while now.
So, victorious, we haven't talked about your usage pattern that much. At least, I didn't see where you mentioned this scooter was going. Is it the same/similar trip every day? Charging at your end location *really* will be the simplest solution right now, and essential to take care of your batteries just a bit more. Is there any reason why you can't do that, and can we work around it? You could go so far as putting a $150 150watt solar panel at your end location, leaving your friend's lead to charge up there, and charging from that (if there is no outlet at your end location).
As a general reminder, putting batteries in parallel would mean nothing is changed in your charging setup or your usage setup. You can't blow the capacitors or anything like that. Rather than having 48v 20ah you would have 48v 27ah (if you added 12 7ah batteries in parallel). That's one of the reasons I suggested this, for simplicity.
However, it is likely that doubling your lead would be just too much for the scooter, both in terms of space and weight. 20ah batteries are not small.
Sorry to add to the overinformation! I wanted to post with the sense that I could feel too much information is bad and unfriendly, and then I just added more. D'oh.
Victorious1 wrote:what will give me the best range in lithium batteries, with the least fuss and maintenance, once I decide to switch up to them?
Victorious1 wrote:Lithium NMC batteries have less size and weight than LiFePO4, because it’s power density is higher. However, Li NMC has much less lifecycles than LiFePO4. Also, Li NMC is not safe. LiFePO4 is very safe. It won’t catch fire or explode if it’s being over-discharged, shorted or over-charged. It will be only swollen in those extreme conditions.
Victorious1 wrote:I did run across a term I'm not sure about: BMS Can Upgrade to 3000W 120A, if you need, what exactly does that mean and why does it matter?