Battery connectors - extension?

[allen-uk]

Hello.

On my Boss conversion, the battery (48V) is connected to the bike's electrics by plugging two plastic connectors together - see picture below.

Can I buy a short extension lead with the same connectors, so that I can mount the battery in a 'better' position? Currently it sits behind the saddle, which makes the back of the bike very heavy (unbalanced), so I was thinking of mounting it on a front rack instead. This would need another 18 inches or so of battery lead with those connectors.

Advice welcomed.

A

Done a bit of googling and it seems they are 'Anderson' connectors.
Found this 1m length which seems to have the right ends already..
Is voltage drop a problem with ebike batterys and length of cables?

http://www.ebay.co.uk/itm/1M-x-25-MM2-BATTERY-CABLE-ANDERSON-PLUGS-SB-175A-BATTERY-JUMP-CONNECTOR-LEAD-/141248907340?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item20e317484c

 

[Deleted member 4366]

Make sure that they're the same size because those connectors come in different sizes for different power. That's pretty hefty wire that won't look so pretty on your bike. 12swg would probably be OK. 25mmsq is about 4swg!

You could cut your controller connect off about 2" from the connector, and then solder in two pieces of 12g wire, which will be a lot cheaper and neater:

http://www.ebay.co.uk/itm/Silicone-Wire-2-Metre-Red-and-Black-12AWG-/121308968782?pt=UK_ToysGames_RadioControlled_JN&hash=item1c3e93f74e

 

[allen-uk]

Thanks d8veh. My connectors are marked: SB 50A 600V, For disconnect use only (?)

Ta for the tip re soldering, but given my ineptitude with solder etc., I'd rather buy this ready made. Any ideas of any other company that sells such extension leads (preferable with the right cables?)

Thanks.

A

 

[Aushiker]

Thanks d8veh. My connectors are marked: SB 50A 600V, For disconnect use only (?)

They look similar to Anderson connectors. Anderson use the SB prefix for some models.

Andrew

 

[allen-uk]

Thanks Andrew, from your pic they look identical to mine, so Andersons they are.

A

 

[allen-uk]

Well, I googled around and found one company who do custom-made battery cables, with whatever ends you want, and for a two-ended Anderson .5m cable it'd be... £65 (inc vat, p&p, etc).

... perhaps I'd better brush up my soldering skills instead.

Just for the record, the company
is:

http://www.pcscables.co.uk/custom-battery-cable/

There are probably others. PCS will of course flog you all the bits for a lot less than £65, if you've got the skills to put it all together.

A

 

[Deleted member 4366]

You'd need a sizeable soldering iron for those. A gas flame would be better.

If you have one of those mini gas torches, You need to hold the terminal in a crocodile clip or small vice. If you use a vice, hold it by the very tip. Put the wire into the terminal and heat everything up with the torch. When it's hot enough, feed in the solder, which will flow in. Keep feeding until you can see that no more is disappearing down the wire. Leave to cool.

I use the gas cooker. Strip the end of the wire and poke it just into the flame, holding with thin pliers. When it's hot enough, just draw it back a bit and bring the solder to it. Melt in the solder until it's saturated. Depening on the fit into the terminal, you might have to file it a bit. Then hold the terminal in the flame and fill a bit of the terminal with solder when it's hot enough. Bring it just away from the flame and push the wire into the hole. Wait until you can see that the solder has melted and fused. Remove from the flame and let it cool. Again, you have to file off any blobs that go on the outside.

 

[trex]

if you don't have a high power soldering iron, remember heat rises.
Clamp the wire vertically then keep the soldering iron tip roughly at the bottom end where you want the solder to reach. Keep heating and apply the solder wire at the top end where you want the solder to go. After about 30 seconds, the heat should be enough to melt the solder, which then flows down the whole section where you want to apply the solder to.