Delores,<br><br>Concerning the space you have available underneath the companionway steps, we've had our engine starting battery relocated there on our Sharki. The separate 'house' battery bank (three 105 Ah group 31 deep cycles) sits in the engine room. I've seen another Sharki that fitted in the standard Amel battery bin four of the T125 Trojan 6V golf cart batteries without modification to the battery bin (other than fitting a new hold-down device). When I'm ready to replace my house batteries I'll rewire for the increased capacity with the four golf cart batteries.<br><br>Rich<br>Xanareva