Giant Fathom E+ 3 advise needed for battery replacement

#1
I have recently bought myself a Giant Fathom E+ 3 and it is a beautiful eBike. Originally I was going to buy the Fathom E+ 2 with the Energypak 500 battery but I decided on the Fathom E+ 3 with the Energypak 400 battery instead. However, I would like to buy the Energypak 500 battery for my Fathom E+ 3 for the added capacity and range. How easy is it to replace the Energypak battery on the Giant Fathom E+ eBikes? Please advise.
 

Nova Haibike

Well-Known Member
#2
I don't own a Giant, but unless I am mistaken, the battery form factor is the same regardless of capacity. So you merely insert the key to remove the current pack, and install the higher capacity battery. There are no modifications necessary.
 
#3
Thanks for the reply. When the battery is removed from the bike, do I remove it from the hard cover that forms part of the frame which has the Giant logo on each side?
 
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#7
I ordered the 500wh battery for my Giant Fathom E+ 3 and I got a call telling me it’s ready to pick up. However the bike shop manager told be that the battery is bare with no side panels at each side (the side panels with the Giant logo at each side). Is there a way to remove the side panels on my current battery to attach to my new battery?
 
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JRA

Well-Known Member
#8
Having a hard time thinking that Giant would sell a battery not in a case. Perhaps all that is missing are the decals and their reasoning being that due to their models selection of color ways one color would not fit all. Perhaps they can provide the correct color transfers and they are all that need to be applied?
 
#9
Having a hard time thinking that Giant would sell a battery not in a case. Perhaps all that is missing are the decals and their reasoning being that due to their models selection of color ways one color would not fit all. Perhaps they can provide the correct color transfers and they are all that need to be applied?
I am disgusted with the bike shop manager telling me that the side covers can easily be removed and put on the new battery when in fact I will have to buy the covers separate because the side covers are welded to the battery.

Here is the battery which comes without the side covers which I will have to buy separate. I don’t know whether to just get a refund.

https://electricgarageshop.co.uk/p/giant-liv-energypak500-side-loading-frame-36v-g-system-battery
 

JRA

Well-Known Member
#10
That battery is not OEM and why there are no side panels due to licensing laws. It however is fully encased and should mount directly replacing your other battery minus the side covers which you may be able to source directly from Giant. The lack of side overs is cosmetic and will have no bearing on performance.
 
#11
I am the manager of a Giant store. When ordering a battery, we just request the matching panels. This give you aesthetics and a charging port cover. The bare battery will work just fine, but leaves the charging port exposed.
 
#12
I am the manager of a Giant store. When ordering a battery, we just request the matching panels. This give you aesthetics and a charging port cover. The bare battery will work just fine, but leaves the charging port exposed.
I received my battery a few days ago. I have to cover the charging port with insulation tape while I wait for the matching panels to arrive which cost £35. However, the panels are out of stock just now. My other battery that came with my Fathom E has the matching panels but I need to order other matching panels.