Positive Grid Spark Battery

The battery lasts for several hours at least when playing at lower volumes. It is very convenient when taking the amp to a jam session in a venue with insufficient power outlets. I have not owned it for long, so the jury is still out to a certain extent, but so far it is excellent. I will update my review in six months or so.

Does exactly what I need it to. The nice thing is it recharges at the same time that you are playing if your amp is plugged in. I have run it for 5 or 6 hours without running out of juice before recharging it.

What a great way to make my Spark 2 truly portable. No cords to string out and trip over. Charges while plugged in. Easy to install and take out. I know the charge lasts at least 2 hours. Haven't tried testing to its max.

It works like a charm! Easy to operate and a lot of fun and freedom

Fit is perfect. Shipped quick and packaged well.

I bought this for my Spark 2 amp. It holds the charge well, and lasts for the whole day at a practice volume. I generally charge this once every week or two as a casual player. It feels slightly overpriced compared to other batteries of the same capacity and output, but for a proprietary part it's not too painful. I would definitely recommend this for any Spark owners who plan on either moving around their house or bringing their amp to practice sessions.

Great product

Definitely worth the money. Turns my practice amp into the perfect campfire sound system.Great for acoustic jams.