Is the MSJ-1000 effectively two MSJ-500s in one jar?

On the published figures it behaves that way. Capacity is 2.01 times, weight 1.99 times, depth 1.95 times, and internal resistance is the same 0.28 milliohms. The difference that matters is structural: one jar means one set of terminals, one pair of intercell connections per position and one monitoring point, where two paralleled cells mean twice of each plus a current sharing imbalance that grows over the life of the bank.

Why is no short circuit current figure published?

CSB prints a dash in that row of the MSJ-1000 datasheet where it gives 5,075, 6,065 and 9,953 amps for the three smaller cells. We have not been given a reason and we will not estimate one by extrapolation, because a fault current figure used in a protective device calculation has to come from the manufacturer. If your design needs it, a specialist will request it from CSB in writing before the order is placed.

What does a full string weigh?

A 24 cell string for a -48 volt bus comes to roughly 3,851 lbs of cells before racking, hardware or cabling. A 60 cell substation bank is close to 9,627 lbs. Those numbers usually need a structural check on an upper floor or a mezzanine, and they decide whether the delivery needs a dock, a forklift or a liftgate.

How is a 160 lb cell installed into a rack?

With a lifting strap or a battery lifter rated for the load and two people, or a hoist where the tier is above waist height. The cell is 18.54 inches deep, so the load sits well forward of the handler and a two person carry by hand invites a dropped jar and a cracked case. Plan the access route and the lifting arrangement before the pallet arrives, not on the day.