Also known as T501-Non-Rechargeable Energy Storage Unit, each Single-Use Battery can store up to 1000 EU. That's 9000 EU less than their rechargeable counterparts... and you can't recharge them. However, they are much easier to produce in quantities and are easier to transport.
|Storage||1,000 (per battery)|
Using Single use batteries is more efficient than burning coal.
Coal holds 4000 EU. Making dust costs 625 EU + 500 for the Redstone = 5125 EU
You only have to think of what's worth more: 2875 EU and the portability, or 1 Cable.