How Add More Battery?

[Nehmo]

I currently (bought used and fixed) have a XP 3.0 Lectric ebike 500watt motor and an unknown 48v battery inside. I don't get much range (11 miles, motor only), and I want to extend that. I'd like to add an additional battery. Lectric offers Lectric XP™ Spare eBike Battery - Lectric eBikes which is expensive and fits in as a replacement. I want to add some watt hours in addition to what I have. I could electrically switch all the pins, but there should be a simpler method.
Suggestions? New item by Nehmo Sergheyev

 

[ebike4healthandfitness]

Lectric offers Lectric XP™ Spare eBike Battery - Lectric eBikes which is expensive and fits in as a replacement.

$210 free shipping for a UL2271 certified 48v 10.4 Ah battery is cheap!

EDIT: As a comparison point here is a teardown of a 48v 10.4 Ah battery from a Lectric XP 1.0 ---> https://rick.sparber.org/eBikeBattery.pdf

 

[BiggKidd]

I currently (bought used and fixed) have a XP 3.0 Lectric ebike 500watt motor and an unknown 48v battery inside. I don't get much range (11 miles, motor only), and I want to extend that. I'd like to add an additional battery. Lectric offers Lectric XP™ Spare eBike Battery - Lectric eBikes which is expensive and fits in as a replacement. I want to add some watt hours in addition to what I have. I could electrically switch all the pins, but there should be a simpler method.
Suggestions? New item by Nehmo Sergheyev

You have all sorts of options from just getting an XT60 single to double connector or spending 50-70$ for an actual battery combiner.

 

[amberwolf]

an actual battery combiner.

note that some of those that claim to be smart may operate so taht only one battery operates at a time, and others actually combine the output of both, paralleled.

iirc there is a thread about one version that has broken logic and uses the output of the lower voltage battery instead of the higher voltage one, which could cause it to never use one of the batteries until the other is completely out of juice and it's bms has disconnected, or it might not even do it then and require disconnection of the empty one, in which case you could have gotten away much cheaper with a y-connector.

the simple ones that have no smarts but simply use "ideal diodes" (fets operated as diodes) will just leave the outputs of both always connected to the controller but blocked from each other so load sharing is at least possible if the packs are similar enough and similar condition.

there are other possible logic situations used that may or may not be good and/or safe under various circumstances.


so be careful when choosing one and be sure how it operates before depending on it.

 

[99zip99]

Lelectric make s***** batteries with weak cells how do I know I have one taking apart on my garage floor with 21700 cells a low wattage. Buy something with good cells inside that can last.

 

[rafalg]

If the range is just 11 miles i'd say the battery won't last very long and it's better to replace it than to combine with a good battery.

 

[aae34]

so be careful when choosing one and be sure how it operates before depending on it.

I've bought a random 40A "dual battery converter" or w/e it was called for on aliexpress.
Very happy with the purchase. Feels like i get plenty more out of my batteries(2x20Ah) than
before when i was still manually switching. I also believe my converter saved my bike from
burning or loosing any cells when a bms went out and i still had to get back to home before
even noticing the extent of issues that battery had(versus if i had used a simple y-connector).

 

[Zambam]

I've bought a random 40A "dual battery converter" or w/e it was called for on aliexpress.
Very happy with the purchase. Feels like i get plenty more out of my batteries(2x20Ah) than
before when i was still manually switching. I also believe my converter saved my bike from
burning or loosing any cells when a bms went out and i still had to get back to home before
even noticing the extent of issues that battery had(versus if i had used a simple y-connector).

Does your's have a charge function? Is it similar to this one https://www.aliexpress.us/item/3256...kbYSWK2I&utparam-url=scene:search|query_from:

Anyone knows what's inside, circuit wise?

 

[aae34]

Does your's have a charge function? Is it similar to this one https://www.aliexpress.us/item/3256803852666205.html?spm=a2g0o.productlist.main.3.5a01lpJElpJEN9&algo_pvid=e1f7893b-c9ea-4c66-97ae-b1701519c6bd&algo_exp_id=e1f7893b-c9ea-4c66-97ae-b1701519c6bd-0&pdp_npi=4@dis!USD!40.12!40.12!!!40.12!40.12!@2101c71a17332715662804152e6c3d!12000042826591116!sea!US!3042880182!X&curPageLogUid=PVehkbYSWK2I&utparam-url=scene:search|query_from:

Anyone knows what's inside, circuit wise?

Nope, it's the cheaper no-charge 2to1, but i do have one of those in the basket
there waiting for a better time to buy hobby-things. I'm going to open up the
one i buy, and see if it would be possible to increase the charging amps to 10.
useless for me like that when my charger gives 10A, and batterys take 5A each.

(the linked product specs don't mention the amps it can charge w/ at all, but
most other sellers acknowledge it is only 5A those things are able to charge)