Solar Power

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glalt
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Re: Solar Power

Post by glalt » November 29, 2017, 11:52 am

According to EP Solar, the maximum charging rates for gel type batteries is 14.2 volts with no equalization cycles. For AGM it is 14.4 volts and for flooded it is 14.6 volts. That's a pretty narrow range. You need a decent solar charger to properly charge the batteries. I'd hate to fry my batteries because the solar charger was not accurate enough.

The specs for the TransPower hybrid gel are the same as for the AGM batteries according to the battery specs.

glalt
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Joined: January 14, 2007, 10:35 am
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Re: Solar Power

Post by glalt » December 5, 2017, 12:22 pm

I just ordered two 6 volt 225 AH batteries. They are flooded batteries so I will keep them outside.

http://www.saraphanbattery.com/product/ ... %E0%B8%97/

Price including tax and delivery was 10,486 baht total. I had requested quotes from three battery suppliers and no replies. I got this quote back within a couple hours. Apparently those other companies don't answer emails in English. These T105 3K batteries weigh a kilogram more than the famous Trojan brand.

I could not justify paying more than 14,000 baht for a single 200 AH sealed battery from BSB.

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rjj04
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Re: Solar Power

Post by rjj04 » December 5, 2017, 1:21 pm

When it comes to these deep-cycle batteries, more mass is better.

On a Kg/Wh basis those batteries are 0.0215 Kg/Wh
vs the Volta VIN150 at 0.0294 Kg/Wh
with the Volta you'd get 38% more lead for about the same cost per Wh (or less).
The 3K batts don't give the "dry weight" spec so a little difficult to compare accurately.


Did you find some good reviews of these online?
Anyway, I'm sure they'll hold up a lot better than the Globatt Inva's I've got ;)

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rjj04
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Re: Solar Power

Post by rjj04 » December 5, 2017, 1:37 pm

Hmmm, that page says those 3K batts are only 4,200 THB per battery. So, you paid 2,000 THB more for tax and delivery?

glalt
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Posts: 879
Joined: January 14, 2007, 10:35 am
Location: Nong Hin, Loei

Re: Solar Power

Post by glalt » December 5, 2017, 3:26 pm

rjj04 wrote:
December 5, 2017, 1:37 pm
Hmmm, that page says those 3K batts are only 4,200 THB per battery. So, you paid 2,000 THB more for tax and delivery?
That price is for when you trade in your old batteries. Then there is 7 percent VAT and delivery is 400 baht. I was actually trying to find a deal on Volta but two stores did not reply to my emails. The third store had a battery name that I never heard of, no answer there either.

The few reviews on 3K batteries were good so I decided to take a chance on them. My FB batteries seem to be holding up well but they only sell 125 AH deep cycle. Trojan batteries have great reviews and these 3K seem to be nearly identical

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