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Posted

If the specifications they give on the spec sheets is correct, it does sound like a winner.

How does the cost compare to other types?

  • 2 years later...
Posted

Hi guys,

 

Below is an extract from the Lead Crystal Batteries - User Manual.

 

You can send me a PM with you email address and I will gladly forward you the complete document or any other info you might need.

 

 

ADVANTAGES SUMMARISED
Compared to mainstream rechargeable industrial batteries like lead acid,
lead gel and AGM batteries, Lead Crystal

  • 4 weeks later...
  • 2 years later...
Posted

Have a set of 8 x 150 Ah . Lead Crystal batteries Betta batteries from Deltec . Part of the maintenace program is to discharge the batteries 70 - 80 % and then recharge them every 6 months . I have the spec to charge the batteries . It is stated that this prosess must be done in +- 8 hours . Please can somebody tel me what is a safe discharge rate . After 1 year I am verry satisfied with these batteries performance . I have used Trojans before and as benchmark the Betta do very well .

 

Posted
4 hours ago, Chris Louw said:

can somebody tel me what is a safe discharge rate .

They are essentially AGM batteries, so discharge rates up to about C/5 is fine. I assume what you have is two strings of 150Ah each, so total capacity is 300Ah, so you want a discharge rate of no more than around 50 ampere (I'm hand-wave derating it a bit for Peukert).

I'm not sure if these batteries really need to be discharged and recharged like this. The lead-crystal thing was -- so I believe -- somewhat of a scam. It's not a bad battery, but it's not a bad battery in the sense that good AGM batteries are not bad batteries. I doubt they need anything a normal lead acid doesn't needs to stay good.

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