Tesla Battery

Questions and comments pertaining to battery systems, maintenance and installation
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Tesla Battery

Postby mcrousse » Thu Mar 05, 2015 12:06 pm

Will you be able to bring in the Tesla Battery? Is it good for off grid use? If it is only for a grid tie system, what batteries would you recommend that have the best longevity?

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Re: Tesla Battery

Postby Conundrum » Sat Mar 07, 2015 1:13 pm

I applied to handle the Tesla batteries, however, they are primarily a grid balancing device and therefore not a product used for off grid systems.
By grid balancing, I mean the device is used to allow users to charge it at low draw times, such as late evening, and used it doing peak draw times, such as during the day. This allows users who are in areas such as Nova Scotia who have time-of-day billing through their smart meter system to see substantial savings in their electric bill.

The Tesla package comes with a built in grid-tie power inverter. This system could actually be used in an off-grid arrangement provided that it has another power inverter to 'watch' for the presence of a sine wave. All in all, it is not yet a viable off-grid solution.

The most cost effective solution at this point, provided that space ins't an issue, is a forklift battery. In most cases a single battery can be used to sustain a house for approximately 5 days. They do take a but of work, in that they need to be watered every 6 months or so, but that is just routing maintenance. They can be purchased for around $1000, depending on capacity. Typically we see a 36V 750aH battery for this price. As-is, you will need to remove any dead cells it has and configure it for 24v (or purchase 2 for use as a 48v system). Voltage selection is a totally different topic, but it is important to choose early and collect the required equipment in the right voltage.

On average, a used forklift battery should last you about 10-12 years.

Beardo McShorts
Posts: 55
Joined: Thu May 21, 2009 10:25 am

Re: Tesla Battery

Postby Beardo McShorts » Sat Mar 07, 2015 6:46 pm

Aren't the Tesla batteries just Panasonic batteries arranged by the Tesla company for use in homes with attached grid tie/charging inverters? They are like 1.2V per LiPO cell or something?
Opinions expressed are my own. You can't have them. Go get your own damn opinions.

Off Grid With:
Solar: 6x 235W Mono (1410 Watts)
Charge Controller: 60A CAP
Turbine: UP2KA 2000W
Inverter: 1x 3000W Charging Inverter
Batteries: 12x Trojan L16

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