hi everyone.
we're putting a new battery in the project RX7 and came across a small sealed battery that this crowd are selling for street applications:
http://www.batterydirect.co.nz/vertex_drycell_battery.htm
Another company selling the same thing rebranded:
http://www.performancedistributors.com/batteries.htm
They were reasonably priced and only weigh ~5kg so Chris got one sent to us. The battery specs were surprisingly similar to those of my 'cheap and nasty' jump starter so I pulled it to bits, and wouldn't you know, the batteries were dimensionally identical; name plate data was pretty close too. (see attached pics)
The vertex battery was tested at ~400A cranking, but the maximum charge current @~14V is ~5A, so a few repeated starts on a cold engine will pretty much flatten it, and take 10-30min of driving to recharge (pretty hard on the battery if you ask me)
Time will tell whether it was a wise purchase or not, it appears to start the car ok, and I'm guessing that if I have a maintenance charger on it when it's in the shed it will last a while.
Interestingly, notice the elcheapo battery has 'do not recharge' written on it, and under the vertex label you can see toyoma or something simliar.
Anyway, the point of my long winded ramble was to ask you knowledgable chaps what you reckon about using it...
we're putting a new battery in the project RX7 and came across a small sealed battery that this crowd are selling for street applications:
http://www.batterydirect.co.nz/vertex_drycell_battery.htm
Another company selling the same thing rebranded:
http://www.performancedistributors.com/batteries.htm
They were reasonably priced and only weigh ~5kg so Chris got one sent to us. The battery specs were surprisingly similar to those of my 'cheap and nasty' jump starter so I pulled it to bits, and wouldn't you know, the batteries were dimensionally identical; name plate data was pretty close too. (see attached pics)
The vertex battery was tested at ~400A cranking, but the maximum charge current @~14V is ~5A, so a few repeated starts on a cold engine will pretty much flatten it, and take 10-30min of driving to recharge (pretty hard on the battery if you ask me)
Time will tell whether it was a wise purchase or not, it appears to start the car ok, and I'm guessing that if I have a maintenance charger on it when it's in the shed it will last a while.
Interestingly, notice the elcheapo battery has 'do not recharge' written on it, and under the vertex label you can see toyoma or something simliar.
Anyway, the point of my long winded ramble was to ask you knowledgable chaps what you reckon about using it...