I need solar panel charger for my battery

Gh0stxSinghx

Pedelecer
Mar 31, 2011
105
12
Luton, Bedfordshire
Here is a solution: open the base of your bottle battery, attach a 2-core 14 AWG silicon cable about 10cm to the two battery terminals, then crimp a pair of 30A Anderson plug to the other end of the 10cm cable.
Silicon cable 10cm to the two battery terminals:
terminals - 45amp Anderson Powerpole connectors or 4mm Gold Connector w/ Protector?
Mean cutting about 10cm photo?:


Can solder or not?
 
Last edited:

trex

Esteemed Pedelecer
May 15, 2011
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Silicon cable 10cm to the two battery terminals:
terminals - 45amp Anderson Powerpole connectors or 4mm Gold Connector w/ Protector?
Mean cutting about 10cm photo?:

Yes, make a tail about 10cm.

Can I solder or not?

crimp them first and solder afterwards if you like. Don't use too much solder, keep the solder smooth and inside the crimp.
 

trex

Esteemed Pedelecer
May 15, 2011
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you can make the tail and extension leads using JST plugs and sockets but if you ever touch the wrong pole when you reconnect, the lipo bricks will vaporise the plug. It's that powerful. I would spend £4 on Anderson connectors to make the join between the tail and the extension lead because andersons are foolproof.
 

trex

Esteemed Pedelecer
May 15, 2011
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use the gold JST between the two liipo 5AH bricks, use 45A anderson where you put the ?.
 

trex

Esteemed Pedelecer
May 15, 2011
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Yes, GS.
Think about putting a 30A car fuse inline on the red wire of the 10cm tail, inside the base of the bottle battery to limit the balancing current between the two batteries.
 

Gh0stxSinghx

Pedelecer
Mar 31, 2011
105
12
Luton, Bedfordshire

trex

Esteemed Pedelecer
May 15, 2011
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don't put a 3-pin socket on the 10cm tail.
Run it inside the cradle and connect it permanently to the cradle.
Open the battery cradle, you see the red and black wires going between the two M4 threads and the 3pin socket.
Connect the tail to the M4 posts where the red and black wires are connected to the cradle.
 

trex

Esteemed Pedelecer
May 15, 2011
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remove the 3 screws (091) - remove the base.
You'll see the red and black wires.
Attach your 10cm power tail to the same wires.
Leave the anderson connector outside the base.
 

Gh0stxSinghx

Pedelecer
Mar 31, 2011
105
12
Luton, Bedfordshire
I have removed the 3 screws and I see this two red and black wire with GX12-4 pin plug (male). what next?

You mean 2 x battery 10s wire to on bottle battery? I don't think. I need 2 x battery 10s wrie to on BBS01
 
Last edited:

trex

Esteemed Pedelecer
May 15, 2011
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Connect the red wire from the 10cm tail to the red wire inside the base, black to black, then leave the Anderson connector outside the base.
Screw back the base.
You can ride the bike with the bottle battery as before while waiting for the lipo packs.
When you get the lipo packs, make up the second 5AH battery.
Charge the lipo packs to 41V (20.5V each).
Then take the bottle out, plug the new pack into the Anderson, test the bike.
If everything is OK, charge the bottle and put the bottle back in.
Then take a deep breath, switch on the bottle battery.
This is the moment where the lipo pack can damage your bottle battery because bottle batteries are usually fitted with a FET based soft switch. The flow between the two batteries can kill the soft switch.
 

trex

Esteemed Pedelecer
May 15, 2011
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you can use the bottle battery or the lipo pack or both for bigger range.
It would be simpler to get a 36V 15AH bottle battery and sell your 9AH bottle battery second hand but where is the fun in that?
 

trex

Esteemed Pedelecer
May 15, 2011
7,703
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You are making a spur from the base to connect your lipo when needed.
You don't need the 4 pin chassis sockets.
You only need the car fuse if you plan to use BOTH batteries at the same time.
The bottle battery has a switch, you can switch it off, connect the lipo and ride.